| /* |
| * |
| * Broadcom B43legacy wireless driver |
| * |
| * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> |
| * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it> |
| * Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de> |
| * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> |
| * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> |
| * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> |
| * |
| * Some parts of the code in this file are derived from the ipw2200 |
| * driver Copyright(c) 2003 - 2004 Intel Corporation. |
| |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/init.h> |
| #include <linux/moduleparam.h> |
| #include <linux/if_arp.h> |
| #include <linux/etherdevice.h> |
| #include <linux/firmware.h> |
| #include <linux/wireless.h> |
| #include <linux/workqueue.h> |
| #include <linux/sched.h> |
| #include <linux/skbuff.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slab.h> |
| #include <net/dst.h> |
| #include <asm/unaligned.h> |
| |
| #include "b43legacy.h" |
| #include "main.h" |
| #include "debugfs.h" |
| #include "phy.h" |
| #include "dma.h" |
| #include "pio.h" |
| #include "sysfs.h" |
| #include "xmit.h" |
| #include "radio.h" |
| |
| |
| MODULE_DESCRIPTION("Broadcom B43legacy wireless driver"); |
| MODULE_AUTHOR("Martin Langer"); |
| MODULE_AUTHOR("Stefano Brivio"); |
| MODULE_AUTHOR("Michael Buesch"); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_FIRMWARE(B43legacy_SUPPORTED_FIRMWARE_ID); |
| MODULE_FIRMWARE("b43legacy/ucode2.fw"); |
| MODULE_FIRMWARE("b43legacy/ucode4.fw"); |
| |
| #if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO) |
| static int modparam_pio; |
| module_param_named(pio, modparam_pio, int, 0444); |
| MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); |
| #elif defined(CONFIG_B43LEGACY_DMA) |
| # define modparam_pio 0 |
| #elif defined(CONFIG_B43LEGACY_PIO) |
| # define modparam_pio 1 |
| #endif |
| |
| static int modparam_bad_frames_preempt; |
| module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); |
| MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames" |
| " Preemption"); |
| |
| static char modparam_fwpostfix[16]; |
| module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); |
| MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load."); |
| |
| /* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */ |
| static const struct ssb_device_id b43legacy_ssb_tbl[] = { |
| SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2), |
| SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4), |
| SSB_DEVTABLE_END |
| }; |
| MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl); |
| |
| |
| /* Channel and ratetables are shared for all devices. |
| * They can't be const, because ieee80211 puts some precalculated |
| * data in there. This data is the same for all devices, so we don't |
| * get concurrency issues */ |
| #define RATETAB_ENT(_rateid, _flags) \ |
| { \ |
| .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \ |
| .hw_value = (_rateid), \ |
| .flags = (_flags), \ |
| } |
| /* |
| * NOTE: When changing this, sync with xmit.c's |
| * b43legacy_plcp_get_bitrate_idx_* functions! |
| */ |
| static struct ieee80211_rate __b43legacy_ratetable[] = { |
| RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0), |
| RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE), |
| RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE), |
| RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE), |
| RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0), |
| RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0), |
| }; |
| #define b43legacy_b_ratetable (__b43legacy_ratetable + 0) |
| #define b43legacy_b_ratetable_size 4 |
| #define b43legacy_g_ratetable (__b43legacy_ratetable + 0) |
| #define b43legacy_g_ratetable_size 12 |
| |
| #define CHANTAB_ENT(_chanid, _freq) \ |
| { \ |
| .center_freq = (_freq), \ |
| .hw_value = (_chanid), \ |
| } |
| static struct ieee80211_channel b43legacy_bg_chantable[] = { |
| CHANTAB_ENT(1, 2412), |
| CHANTAB_ENT(2, 2417), |
| CHANTAB_ENT(3, 2422), |
| CHANTAB_ENT(4, 2427), |
| CHANTAB_ENT(5, 2432), |
| CHANTAB_ENT(6, 2437), |
| CHANTAB_ENT(7, 2442), |
| CHANTAB_ENT(8, 2447), |
| CHANTAB_ENT(9, 2452), |
| CHANTAB_ENT(10, 2457), |
| CHANTAB_ENT(11, 2462), |
| CHANTAB_ENT(12, 2467), |
| CHANTAB_ENT(13, 2472), |
| CHANTAB_ENT(14, 2484), |
| }; |
| |
| static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = { |
| .channels = b43legacy_bg_chantable, |
| .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), |
| .bitrates = b43legacy_b_ratetable, |
| .n_bitrates = b43legacy_b_ratetable_size, |
| }; |
| |
| static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = { |
| .channels = b43legacy_bg_chantable, |
| .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), |
| .bitrates = b43legacy_g_ratetable, |
| .n_bitrates = b43legacy_g_ratetable_size, |
| }; |
| |
| static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev); |
| static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev); |
| static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev); |
| static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev); |
| |
| |
| static int b43legacy_ratelimit(struct b43legacy_wl *wl) |
| { |
| if (!wl || !wl->current_dev) |
| return 1; |
| if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED) |
| return 1; |
| /* We are up and running. |
| * Ratelimit the messages to avoid DoS over the net. */ |
| return net_ratelimit(); |
| } |
| |
| void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| |
| if (!b43legacy_ratelimit(wl)) |
| return; |
| |
| va_start(args, fmt); |
| |
| vaf.fmt = fmt; |
| vaf.va = &args; |
| |
| printk(KERN_INFO "b43legacy-%s: %pV", |
| (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); |
| |
| va_end(args); |
| } |
| |
| void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| |
| if (!b43legacy_ratelimit(wl)) |
| return; |
| |
| va_start(args, fmt); |
| |
| vaf.fmt = fmt; |
| vaf.va = &args; |
| |
| printk(KERN_ERR "b43legacy-%s ERROR: %pV", |
| (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); |
| |
| va_end(args); |
| } |
| |
| void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| |
| if (!b43legacy_ratelimit(wl)) |
| return; |
| |
| va_start(args, fmt); |
| |
| vaf.fmt = fmt; |
| vaf.va = &args; |
| |
| printk(KERN_WARNING "b43legacy-%s warning: %pV", |
| (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); |
| |
| va_end(args); |
| } |
| |
| #if B43legacy_DEBUG |
| void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...) |
| { |
| struct va_format vaf; |
| va_list args; |
| |
| va_start(args, fmt); |
| |
| vaf.fmt = fmt; |
| vaf.va = &args; |
| |
| printk(KERN_DEBUG "b43legacy-%s debug: %pV", |
| (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); |
| |
| va_end(args); |
| } |
| #endif /* DEBUG */ |
| |
| static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset, |
| u32 val) |
| { |
| u32 status; |
| |
| B43legacy_WARN_ON(offset % 4 != 0); |
| |
| status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| if (status & B43legacy_MACCTL_BE) |
| val = swab32(val); |
| |
| b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset); |
| mmiowb(); |
| b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val); |
| } |
| |
| static inline |
| void b43legacy_shm_control_word(struct b43legacy_wldev *dev, |
| u16 routing, u16 offset) |
| { |
| u32 control; |
| |
| /* "offset" is the WORD offset. */ |
| |
| control = routing; |
| control <<= 16; |
| control |= offset; |
| b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control); |
| } |
| |
| u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, |
| u16 routing, u16 offset) |
| { |
| u32 ret; |
| |
| if (routing == B43legacy_SHM_SHARED) { |
| B43legacy_WARN_ON((offset & 0x0001) != 0); |
| if (offset & 0x0003) { |
| /* Unaligned access */ |
| b43legacy_shm_control_word(dev, routing, offset >> 2); |
| ret = b43legacy_read16(dev, |
| B43legacy_MMIO_SHM_DATA_UNALIGNED); |
| ret <<= 16; |
| b43legacy_shm_control_word(dev, routing, |
| (offset >> 2) + 1); |
| ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); |
| |
| return ret; |
| } |
| offset >>= 2; |
| } |
| b43legacy_shm_control_word(dev, routing, offset); |
| ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA); |
| |
| return ret; |
| } |
| |
| u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, |
| u16 routing, u16 offset) |
| { |
| u16 ret; |
| |
| if (routing == B43legacy_SHM_SHARED) { |
| B43legacy_WARN_ON((offset & 0x0001) != 0); |
| if (offset & 0x0003) { |
| /* Unaligned access */ |
| b43legacy_shm_control_word(dev, routing, offset >> 2); |
| ret = b43legacy_read16(dev, |
| B43legacy_MMIO_SHM_DATA_UNALIGNED); |
| |
| return ret; |
| } |
| offset >>= 2; |
| } |
| b43legacy_shm_control_word(dev, routing, offset); |
| ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); |
| |
| return ret; |
| } |
| |
| void b43legacy_shm_write32(struct b43legacy_wldev *dev, |
| u16 routing, u16 offset, |
| u32 value) |
| { |
| if (routing == B43legacy_SHM_SHARED) { |
| B43legacy_WARN_ON((offset & 0x0001) != 0); |
| if (offset & 0x0003) { |
| /* Unaligned access */ |
| b43legacy_shm_control_word(dev, routing, offset >> 2); |
| mmiowb(); |
| b43legacy_write16(dev, |
| B43legacy_MMIO_SHM_DATA_UNALIGNED, |
| (value >> 16) & 0xffff); |
| mmiowb(); |
| b43legacy_shm_control_word(dev, routing, |
| (offset >> 2) + 1); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, |
| value & 0xffff); |
| return; |
| } |
| offset >>= 2; |
| } |
| b43legacy_shm_control_word(dev, routing, offset); |
| mmiowb(); |
| b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value); |
| } |
| |
| void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset, |
| u16 value) |
| { |
| if (routing == B43legacy_SHM_SHARED) { |
| B43legacy_WARN_ON((offset & 0x0001) != 0); |
| if (offset & 0x0003) { |
| /* Unaligned access */ |
| b43legacy_shm_control_word(dev, routing, offset >> 2); |
| mmiowb(); |
| b43legacy_write16(dev, |
| B43legacy_MMIO_SHM_DATA_UNALIGNED, |
| value); |
| return; |
| } |
| offset >>= 2; |
| } |
| b43legacy_shm_control_word(dev, routing, offset); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value); |
| } |
| |
| /* Read HostFlags */ |
| u32 b43legacy_hf_read(struct b43legacy_wldev *dev) |
| { |
| u32 ret; |
| |
| ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_HOSTFHI); |
| ret <<= 16; |
| ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_HOSTFLO); |
| |
| return ret; |
| } |
| |
| /* Write HostFlags */ |
| void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value) |
| { |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_HOSTFLO, |
| (value & 0x0000FFFF)); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_HOSTFHI, |
| ((value & 0xFFFF0000) >> 16)); |
| } |
| |
| void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf) |
| { |
| /* We need to be careful. As we read the TSF from multiple |
| * registers, we should take care of register overflows. |
| * In theory, the whole tsf read process should be atomic. |
| * We try to be atomic here, by restaring the read process, |
| * if any of the high registers changed (overflew). |
| */ |
| if (dev->dev->id.revision >= 3) { |
| u32 low; |
| u32 high; |
| u32 high2; |
| |
| do { |
| high = b43legacy_read32(dev, |
| B43legacy_MMIO_REV3PLUS_TSF_HIGH); |
| low = b43legacy_read32(dev, |
| B43legacy_MMIO_REV3PLUS_TSF_LOW); |
| high2 = b43legacy_read32(dev, |
| B43legacy_MMIO_REV3PLUS_TSF_HIGH); |
| } while (unlikely(high != high2)); |
| |
| *tsf = high; |
| *tsf <<= 32; |
| *tsf |= low; |
| } else { |
| u64 tmp; |
| u16 v0; |
| u16 v1; |
| u16 v2; |
| u16 v3; |
| u16 test1; |
| u16 test2; |
| u16 test3; |
| |
| do { |
| v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); |
| v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); |
| v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); |
| v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0); |
| |
| test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); |
| test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); |
| test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); |
| } while (v3 != test3 || v2 != test2 || v1 != test1); |
| |
| *tsf = v3; |
| *tsf <<= 48; |
| tmp = v2; |
| tmp <<= 32; |
| *tsf |= tmp; |
| tmp = v1; |
| tmp <<= 16; |
| *tsf |= tmp; |
| *tsf |= v0; |
| } |
| } |
| |
| static void b43legacy_time_lock(struct b43legacy_wldev *dev) |
| { |
| u32 status; |
| |
| status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| status |= B43legacy_MACCTL_TBTTHOLD; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); |
| mmiowb(); |
| } |
| |
| static void b43legacy_time_unlock(struct b43legacy_wldev *dev) |
| { |
| u32 status; |
| |
| status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| status &= ~B43legacy_MACCTL_TBTTHOLD; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); |
| } |
| |
| static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf) |
| { |
| /* Be careful with the in-progress timer. |
| * First zero out the low register, so we have a full |
| * register-overflow duration to complete the operation. |
| */ |
| if (dev->dev->id.revision >= 3) { |
| u32 lo = (tsf & 0x00000000FFFFFFFFULL); |
| u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; |
| |
| b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0); |
| mmiowb(); |
| b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH, |
| hi); |
| mmiowb(); |
| b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, |
| lo); |
| } else { |
| u16 v0 = (tsf & 0x000000000000FFFFULL); |
| u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; |
| u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; |
| u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; |
| |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1); |
| mmiowb(); |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0); |
| } |
| } |
| |
| void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf) |
| { |
| b43legacy_time_lock(dev); |
| b43legacy_tsf_write_locked(dev, tsf); |
| b43legacy_time_unlock(dev); |
| } |
| |
| static |
| void b43legacy_macfilter_set(struct b43legacy_wldev *dev, |
| u16 offset, const u8 *mac) |
| { |
| static const u8 zero_addr[ETH_ALEN] = { 0 }; |
| u16 data; |
| |
| if (!mac) |
| mac = zero_addr; |
| |
| offset |= 0x0020; |
| b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset); |
| |
| data = mac[0]; |
| data |= mac[1] << 8; |
| b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); |
| data = mac[2]; |
| data |= mac[3] << 8; |
| b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); |
| data = mac[4]; |
| data |= mac[5] << 8; |
| b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); |
| } |
| |
| static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev) |
| { |
| static const u8 zero_addr[ETH_ALEN] = { 0 }; |
| const u8 *mac = dev->wl->mac_addr; |
| const u8 *bssid = dev->wl->bssid; |
| u8 mac_bssid[ETH_ALEN * 2]; |
| int i; |
| u32 tmp; |
| |
| if (!bssid) |
| bssid = zero_addr; |
| if (!mac) |
| mac = zero_addr; |
| |
| b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid); |
| |
| memcpy(mac_bssid, mac, ETH_ALEN); |
| memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); |
| |
| /* Write our MAC address and BSSID to template ram */ |
| for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { |
| tmp = (u32)(mac_bssid[i + 0]); |
| tmp |= (u32)(mac_bssid[i + 1]) << 8; |
| tmp |= (u32)(mac_bssid[i + 2]) << 16; |
| tmp |= (u32)(mac_bssid[i + 3]) << 24; |
| b43legacy_ram_write(dev, 0x20 + i, tmp); |
| b43legacy_ram_write(dev, 0x78 + i, tmp); |
| b43legacy_ram_write(dev, 0x478 + i, tmp); |
| } |
| } |
| |
| static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev) |
| { |
| b43legacy_write_mac_bssid_templates(dev); |
| b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF, |
| dev->wl->mac_addr); |
| } |
| |
| static void b43legacy_set_slot_time(struct b43legacy_wldev *dev, |
| u16 slot_time) |
| { |
| /* slot_time is in usec. */ |
| if (dev->phy.type != B43legacy_PHYTYPE_G) |
| return; |
| b43legacy_write16(dev, 0x684, 510 + slot_time); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010, |
| slot_time); |
| } |
| |
| static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev) |
| { |
| b43legacy_set_slot_time(dev, 9); |
| } |
| |
| static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev) |
| { |
| b43legacy_set_slot_time(dev, 20); |
| } |
| |
| /* Synchronize IRQ top- and bottom-half. |
| * IRQs must be masked before calling this. |
| * This must not be called with the irq_lock held. |
| */ |
| static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev) |
| { |
| synchronize_irq(dev->dev->irq); |
| tasklet_kill(&dev->isr_tasklet); |
| } |
| |
| /* DummyTransmission function, as documented on |
| * http://bcm-specs.sipsolutions.net/DummyTransmission |
| */ |
| void b43legacy_dummy_transmission(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| unsigned int i; |
| unsigned int max_loop; |
| u16 value; |
| u32 buffer[5] = { |
| 0x00000000, |
| 0x00D40000, |
| 0x00000000, |
| 0x01000000, |
| 0x00000000, |
| }; |
| |
| switch (phy->type) { |
| case B43legacy_PHYTYPE_B: |
| case B43legacy_PHYTYPE_G: |
| max_loop = 0xFA; |
| buffer[0] = 0x000B846E; |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| return; |
| } |
| |
| for (i = 0; i < 5; i++) |
| b43legacy_ram_write(dev, i * 4, buffer[i]); |
| |
| /* dummy read follows */ |
| b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| |
| b43legacy_write16(dev, 0x0568, 0x0000); |
| b43legacy_write16(dev, 0x07C0, 0x0000); |
| b43legacy_write16(dev, 0x050C, 0x0000); |
| b43legacy_write16(dev, 0x0508, 0x0000); |
| b43legacy_write16(dev, 0x050A, 0x0000); |
| b43legacy_write16(dev, 0x054C, 0x0000); |
| b43legacy_write16(dev, 0x056A, 0x0014); |
| b43legacy_write16(dev, 0x0568, 0x0826); |
| b43legacy_write16(dev, 0x0500, 0x0000); |
| b43legacy_write16(dev, 0x0502, 0x0030); |
| |
| if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) |
| b43legacy_radio_write16(dev, 0x0051, 0x0017); |
| for (i = 0x00; i < max_loop; i++) { |
| value = b43legacy_read16(dev, 0x050E); |
| if (value & 0x0080) |
| break; |
| udelay(10); |
| } |
| for (i = 0x00; i < 0x0A; i++) { |
| value = b43legacy_read16(dev, 0x050E); |
| if (value & 0x0400) |
| break; |
| udelay(10); |
| } |
| for (i = 0x00; i < 0x0A; i++) { |
| value = b43legacy_read16(dev, 0x0690); |
| if (!(value & 0x0100)) |
| break; |
| udelay(10); |
| } |
| if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) |
| b43legacy_radio_write16(dev, 0x0051, 0x0037); |
| } |
| |
| /* Turn the Analog ON/OFF */ |
| static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on) |
| { |
| b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4); |
| } |
| |
| void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags) |
| { |
| u32 tmslow; |
| u32 macctl; |
| |
| flags |= B43legacy_TMSLOW_PHYCLKEN; |
| flags |= B43legacy_TMSLOW_PHYRESET; |
| ssb_device_enable(dev->dev, flags); |
| msleep(2); /* Wait for the PLL to turn on. */ |
| |
| /* Now take the PHY out of Reset again */ |
| tmslow = ssb_read32(dev->dev, SSB_TMSLOW); |
| tmslow |= SSB_TMSLOW_FGC; |
| tmslow &= ~B43legacy_TMSLOW_PHYRESET; |
| ssb_write32(dev->dev, SSB_TMSLOW, tmslow); |
| ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ |
| msleep(1); |
| tmslow &= ~SSB_TMSLOW_FGC; |
| ssb_write32(dev->dev, SSB_TMSLOW, tmslow); |
| ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ |
| msleep(1); |
| |
| /* Turn Analog ON */ |
| b43legacy_switch_analog(dev, 1); |
| |
| macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| macctl &= ~B43legacy_MACCTL_GMODE; |
| if (flags & B43legacy_TMSLOW_GMODE) { |
| macctl |= B43legacy_MACCTL_GMODE; |
| dev->phy.gmode = 1; |
| } else |
| dev->phy.gmode = 0; |
| macctl |= B43legacy_MACCTL_IHR_ENABLED; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| } |
| |
| static void handle_irq_transmit_status(struct b43legacy_wldev *dev) |
| { |
| u32 v0; |
| u32 v1; |
| u16 tmp; |
| struct b43legacy_txstatus stat; |
| |
| while (1) { |
| v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); |
| if (!(v0 & 0x00000001)) |
| break; |
| v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); |
| |
| stat.cookie = (v0 >> 16); |
| stat.seq = (v1 & 0x0000FFFF); |
| stat.phy_stat = ((v1 & 0x00FF0000) >> 16); |
| tmp = (v0 & 0x0000FFFF); |
| stat.frame_count = ((tmp & 0xF000) >> 12); |
| stat.rts_count = ((tmp & 0x0F00) >> 8); |
| stat.supp_reason = ((tmp & 0x001C) >> 2); |
| stat.pm_indicated = !!(tmp & 0x0080); |
| stat.intermediate = !!(tmp & 0x0040); |
| stat.for_ampdu = !!(tmp & 0x0020); |
| stat.acked = !!(tmp & 0x0002); |
| |
| b43legacy_handle_txstatus(dev, &stat); |
| } |
| } |
| |
| static void drain_txstatus_queue(struct b43legacy_wldev *dev) |
| { |
| u32 dummy; |
| |
| if (dev->dev->id.revision < 5) |
| return; |
| /* Read all entries from the microcode TXstatus FIFO |
| * and throw them away. |
| */ |
| while (1) { |
| dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); |
| if (!(dummy & 0x00000001)) |
| break; |
| dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); |
| } |
| } |
| |
| static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev) |
| { |
| u32 val = 0; |
| |
| val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A); |
| val <<= 16; |
| val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408); |
| |
| return val; |
| } |
| |
| static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi) |
| { |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408, |
| (jssi & 0x0000FFFF)); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A, |
| (jssi & 0xFFFF0000) >> 16); |
| } |
| |
| static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev) |
| { |
| b43legacy_jssi_write(dev, 0x7F7F7F7F); |
| b43legacy_write32(dev, B43legacy_MMIO_MACCMD, |
| b43legacy_read32(dev, B43legacy_MMIO_MACCMD) |
| | B43legacy_MACCMD_BGNOISE); |
| B43legacy_WARN_ON(dev->noisecalc.channel_at_start != |
| dev->phy.channel); |
| } |
| |
| static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev) |
| { |
| /* Top half of Link Quality calculation. */ |
| |
| if (dev->noisecalc.calculation_running) |
| return; |
| dev->noisecalc.channel_at_start = dev->phy.channel; |
| dev->noisecalc.calculation_running = 1; |
| dev->noisecalc.nr_samples = 0; |
| |
| b43legacy_generate_noise_sample(dev); |
| } |
| |
| static void handle_irq_noise(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| u16 tmp; |
| u8 noise[4]; |
| u8 i; |
| u8 j; |
| s32 average; |
| |
| /* Bottom half of Link Quality calculation. */ |
| |
| B43legacy_WARN_ON(!dev->noisecalc.calculation_running); |
| if (dev->noisecalc.channel_at_start != phy->channel) |
| goto drop_calculation; |
| *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev)); |
| if (noise[0] == 0x7F || noise[1] == 0x7F || |
| noise[2] == 0x7F || noise[3] == 0x7F) |
| goto generate_new; |
| |
| /* Get the noise samples. */ |
| B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8); |
| i = dev->noisecalc.nr_samples; |
| noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); |
| noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); |
| noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); |
| noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); |
| dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; |
| dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; |
| dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; |
| dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; |
| dev->noisecalc.nr_samples++; |
| if (dev->noisecalc.nr_samples == 8) { |
| /* Calculate the Link Quality by the noise samples. */ |
| average = 0; |
| for (i = 0; i < 8; i++) { |
| for (j = 0; j < 4; j++) |
| average += dev->noisecalc.samples[i][j]; |
| } |
| average /= (8 * 4); |
| average *= 125; |
| average += 64; |
| average /= 128; |
| tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| 0x40C); |
| tmp = (tmp / 128) & 0x1F; |
| if (tmp >= 8) |
| average += 2; |
| else |
| average -= 25; |
| if (tmp == 8) |
| average -= 72; |
| else |
| average -= 48; |
| |
| dev->stats.link_noise = average; |
| drop_calculation: |
| dev->noisecalc.calculation_running = 0; |
| return; |
| } |
| generate_new: |
| b43legacy_generate_noise_sample(dev); |
| } |
| |
| static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev) |
| { |
| if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) { |
| /* TODO: PS TBTT */ |
| } else { |
| if (1/*FIXME: the last PSpoll frame was sent successfully */) |
| b43legacy_power_saving_ctl_bits(dev, -1, -1); |
| } |
| if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) |
| dev->dfq_valid = 1; |
| } |
| |
| static void handle_irq_atim_end(struct b43legacy_wldev *dev) |
| { |
| if (dev->dfq_valid) { |
| b43legacy_write32(dev, B43legacy_MMIO_MACCMD, |
| b43legacy_read32(dev, B43legacy_MMIO_MACCMD) |
| | B43legacy_MACCMD_DFQ_VALID); |
| dev->dfq_valid = 0; |
| } |
| } |
| |
| static void handle_irq_pmq(struct b43legacy_wldev *dev) |
| { |
| u32 tmp; |
| |
| /* TODO: AP mode. */ |
| |
| while (1) { |
| tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS); |
| if (!(tmp & 0x00000008)) |
| break; |
| } |
| /* 16bit write is odd, but correct. */ |
| b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002); |
| } |
| |
| static void b43legacy_write_template_common(struct b43legacy_wldev *dev, |
| const u8 *data, u16 size, |
| u16 ram_offset, |
| u16 shm_size_offset, u8 rate) |
| { |
| u32 i; |
| u32 tmp; |
| struct b43legacy_plcp_hdr4 plcp; |
| |
| plcp.data = 0; |
| b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); |
| b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); |
| ram_offset += sizeof(u32); |
| /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. |
| * So leave the first two bytes of the next write blank. |
| */ |
| tmp = (u32)(data[0]) << 16; |
| tmp |= (u32)(data[1]) << 24; |
| b43legacy_ram_write(dev, ram_offset, tmp); |
| ram_offset += sizeof(u32); |
| for (i = 2; i < size; i += sizeof(u32)) { |
| tmp = (u32)(data[i + 0]); |
| if (i + 1 < size) |
| tmp |= (u32)(data[i + 1]) << 8; |
| if (i + 2 < size) |
| tmp |= (u32)(data[i + 2]) << 16; |
| if (i + 3 < size) |
| tmp |= (u32)(data[i + 3]) << 24; |
| b43legacy_ram_write(dev, ram_offset + i - 2, tmp); |
| } |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset, |
| size + sizeof(struct b43legacy_plcp_hdr6)); |
| } |
| |
| /* Convert a b43legacy antenna number value to the PHY TX control value. */ |
| static u16 b43legacy_antenna_to_phyctl(int antenna) |
| { |
| switch (antenna) { |
| case B43legacy_ANTENNA0: |
| return B43legacy_TX4_PHY_ANT0; |
| case B43legacy_ANTENNA1: |
| return B43legacy_TX4_PHY_ANT1; |
| } |
| return B43legacy_TX4_PHY_ANTLAST; |
| } |
| |
| static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev, |
| u16 ram_offset, |
| u16 shm_size_offset) |
| { |
| |
| unsigned int i, len, variable_len; |
| const struct ieee80211_mgmt *bcn; |
| const u8 *ie; |
| bool tim_found = 0; |
| unsigned int rate; |
| u16 ctl; |
| int antenna; |
| struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); |
| |
| bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); |
| len = min((size_t)dev->wl->current_beacon->len, |
| 0x200 - sizeof(struct b43legacy_plcp_hdr6)); |
| rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; |
| |
| b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset, |
| shm_size_offset, rate); |
| |
| /* Write the PHY TX control parameters. */ |
| antenna = B43legacy_ANTENNA_DEFAULT; |
| antenna = b43legacy_antenna_to_phyctl(antenna); |
| ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_BEACPHYCTL); |
| /* We can't send beacons with short preamble. Would get PHY errors. */ |
| ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL; |
| ctl &= ~B43legacy_TX4_PHY_ANT; |
| ctl &= ~B43legacy_TX4_PHY_ENC; |
| ctl |= antenna; |
| ctl |= B43legacy_TX4_PHY_ENC_CCK; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_BEACPHYCTL, ctl); |
| |
| /* Find the position of the TIM and the DTIM_period value |
| * and write them to SHM. */ |
| ie = bcn->u.beacon.variable; |
| variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); |
| for (i = 0; i < variable_len - 2; ) { |
| uint8_t ie_id, ie_len; |
| |
| ie_id = ie[i]; |
| ie_len = ie[i + 1]; |
| if (ie_id == 5) { |
| u16 tim_position; |
| u16 dtim_period; |
| /* This is the TIM Information Element */ |
| |
| /* Check whether the ie_len is in the beacon data range. */ |
| if (variable_len < ie_len + 2 + i) |
| break; |
| /* A valid TIM is at least 4 bytes long. */ |
| if (ie_len < 4) |
| break; |
| tim_found = 1; |
| |
| tim_position = sizeof(struct b43legacy_plcp_hdr6); |
| tim_position += offsetof(struct ieee80211_mgmt, |
| u.beacon.variable); |
| tim_position += i; |
| |
| dtim_period = ie[i + 3]; |
| |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_TIMPOS, tim_position); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_DTIMP, dtim_period); |
| break; |
| } |
| i += ie_len + 2; |
| } |
| if (!tim_found) { |
| b43legacywarn(dev->wl, "Did not find a valid TIM IE in the " |
| "beacon template packet. AP or IBSS operation " |
| "may be broken.\n"); |
| } else |
| b43legacydbg(dev->wl, "Updated beacon template\n"); |
| } |
| |
| static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, |
| u16 shm_offset, u16 size, |
| struct ieee80211_rate *rate) |
| { |
| struct b43legacy_plcp_hdr4 plcp; |
| u32 tmp; |
| __le16 dur; |
| |
| plcp.data = 0; |
| b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); |
| dur = ieee80211_generic_frame_duration(dev->wl->hw, |
| dev->wl->vif, |
| size, |
| rate); |
| /* Write PLCP in two parts and timing for packet transfer */ |
| tmp = le32_to_cpu(plcp.data); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset, |
| tmp & 0xFFFF); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2, |
| tmp >> 16); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6, |
| le16_to_cpu(dur)); |
| } |
| |
| /* Instead of using custom probe response template, this function |
| * just patches custom beacon template by: |
| * 1) Changing packet type |
| * 2) Patching duration field |
| * 3) Stripping TIM |
| */ |
| static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev, |
| u16 *dest_size, |
| struct ieee80211_rate *rate) |
| { |
| const u8 *src_data; |
| u8 *dest_data; |
| u16 src_size, elem_size, src_pos, dest_pos; |
| __le16 dur; |
| struct ieee80211_hdr *hdr; |
| size_t ie_start; |
| |
| src_size = dev->wl->current_beacon->len; |
| src_data = (const u8 *)dev->wl->current_beacon->data; |
| |
| /* Get the start offset of the variable IEs in the packet. */ |
| ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); |
| B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, |
| u.beacon.variable)); |
| |
| if (B43legacy_WARN_ON(src_size < ie_start)) |
| return NULL; |
| |
| dest_data = kmalloc(src_size, GFP_ATOMIC); |
| if (unlikely(!dest_data)) |
| return NULL; |
| |
| /* Copy the static data and all Information Elements, except the TIM. */ |
| memcpy(dest_data, src_data, ie_start); |
| src_pos = ie_start; |
| dest_pos = ie_start; |
| for ( ; src_pos < src_size - 2; src_pos += elem_size) { |
| elem_size = src_data[src_pos + 1] + 2; |
| if (src_data[src_pos] == 5) { |
| /* This is the TIM. */ |
| continue; |
| } |
| memcpy(dest_data + dest_pos, src_data + src_pos, elem_size); |
| dest_pos += elem_size; |
| } |
| *dest_size = dest_pos; |
| hdr = (struct ieee80211_hdr *)dest_data; |
| |
| /* Set the frame control. */ |
| hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| IEEE80211_STYPE_PROBE_RESP); |
| dur = ieee80211_generic_frame_duration(dev->wl->hw, |
| dev->wl->vif, |
| *dest_size, |
| rate); |
| hdr->duration_id = dur; |
| |
| return dest_data; |
| } |
| |
| static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, |
| u16 ram_offset, |
| u16 shm_size_offset, |
| struct ieee80211_rate *rate) |
| { |
| const u8 *probe_resp_data; |
| u16 size; |
| |
| size = dev->wl->current_beacon->len; |
| probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate); |
| if (unlikely(!probe_resp_data)) |
| return; |
| |
| /* Looks like PLCP headers plus packet timings are stored for |
| * all possible basic rates |
| */ |
| b43legacy_write_probe_resp_plcp(dev, 0x31A, size, |
| &b43legacy_b_ratetable[0]); |
| b43legacy_write_probe_resp_plcp(dev, 0x32C, size, |
| &b43legacy_b_ratetable[1]); |
| b43legacy_write_probe_resp_plcp(dev, 0x33E, size, |
| &b43legacy_b_ratetable[2]); |
| b43legacy_write_probe_resp_plcp(dev, 0x350, size, |
| &b43legacy_b_ratetable[3]); |
| |
| size = min((size_t)size, |
| 0x200 - sizeof(struct b43legacy_plcp_hdr6)); |
| b43legacy_write_template_common(dev, probe_resp_data, |
| size, ram_offset, |
| shm_size_offset, rate->hw_value); |
| kfree(probe_resp_data); |
| } |
| |
| static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| |
| if (wl->beacon0_uploaded) |
| return; |
| b43legacy_write_beacon_template(dev, 0x68, 0x18); |
| /* FIXME: Probe resp upload doesn't really belong here, |
| * but we don't use that feature anyway. */ |
| b43legacy_write_probe_resp_template(dev, 0x268, 0x4A, |
| &__b43legacy_ratetable[3]); |
| wl->beacon0_uploaded = 1; |
| } |
| |
| static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| |
| if (wl->beacon1_uploaded) |
| return; |
| b43legacy_write_beacon_template(dev, 0x468, 0x1A); |
| wl->beacon1_uploaded = 1; |
| } |
| |
| static void handle_irq_beacon(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| u32 cmd, beacon0_valid, beacon1_valid; |
| |
| if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) |
| return; |
| |
| /* This is the bottom half of the asynchronous beacon update. */ |
| |
| /* Ignore interrupt in the future. */ |
| dev->irq_mask &= ~B43legacy_IRQ_BEACON; |
| |
| cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); |
| beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID); |
| beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID); |
| |
| /* Schedule interrupt manually, if busy. */ |
| if (beacon0_valid && beacon1_valid) { |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON); |
| dev->irq_mask |= B43legacy_IRQ_BEACON; |
| return; |
| } |
| |
| if (unlikely(wl->beacon_templates_virgin)) { |
| /* We never uploaded a beacon before. |
| * Upload both templates now, but only mark one valid. */ |
| wl->beacon_templates_virgin = 0; |
| b43legacy_upload_beacon0(dev); |
| b43legacy_upload_beacon1(dev); |
| cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); |
| cmd |= B43legacy_MACCMD_BEACON0_VALID; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); |
| } else { |
| if (!beacon0_valid) { |
| b43legacy_upload_beacon0(dev); |
| cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); |
| cmd |= B43legacy_MACCMD_BEACON0_VALID; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); |
| } else if (!beacon1_valid) { |
| b43legacy_upload_beacon1(dev); |
| cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); |
| cmd |= B43legacy_MACCMD_BEACON1_VALID; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); |
| } |
| } |
| } |
| |
| static void b43legacy_beacon_update_trigger_work(struct work_struct *work) |
| { |
| struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, |
| beacon_update_trigger); |
| struct b43legacy_wldev *dev; |
| |
| mutex_lock(&wl->mutex); |
| dev = wl->current_dev; |
| if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) { |
| spin_lock_irq(&wl->irq_lock); |
| /* Update beacon right away or defer to IRQ. */ |
| handle_irq_beacon(dev); |
| /* The handler might have updated the IRQ mask. */ |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, |
| dev->irq_mask); |
| mmiowb(); |
| spin_unlock_irq(&wl->irq_lock); |
| } |
| mutex_unlock(&wl->mutex); |
| } |
| |
| /* Asynchronously update the packet templates in template RAM. |
| * Locking: Requires wl->irq_lock to be locked. */ |
| static void b43legacy_update_templates(struct b43legacy_wl *wl) |
| { |
| struct sk_buff *beacon; |
| /* This is the top half of the ansynchronous beacon update. The bottom |
| * half is the beacon IRQ. Beacon update must be asynchronous to avoid |
| * sending an invalid beacon. This can happen for example, if the |
| * firmware transmits a beacon while we are updating it. */ |
| |
| /* We could modify the existing beacon and set the aid bit in the TIM |
| * field, but that would probably require resizing and moving of data |
| * within the beacon template. Simply request a new beacon and let |
| * mac80211 do the hard work. */ |
| beacon = ieee80211_beacon_get(wl->hw, wl->vif); |
| if (unlikely(!beacon)) |
| return; |
| |
| if (wl->current_beacon) |
| dev_kfree_skb_any(wl->current_beacon); |
| wl->current_beacon = beacon; |
| wl->beacon0_uploaded = 0; |
| wl->beacon1_uploaded = 0; |
| ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger); |
| } |
| |
| static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, |
| u16 beacon_int) |
| { |
| b43legacy_time_lock(dev); |
| if (dev->dev->id.revision >= 3) { |
| b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP, |
| (beacon_int << 16)); |
| b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START, |
| (beacon_int << 10)); |
| } else { |
| b43legacy_write16(dev, 0x606, (beacon_int >> 6)); |
| b43legacy_write16(dev, 0x610, beacon_int); |
| } |
| b43legacy_time_unlock(dev); |
| b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int); |
| } |
| |
| static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) |
| { |
| } |
| |
| /* Interrupt handler bottom-half */ |
| static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev) |
| { |
| u32 reason; |
| u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; |
| u32 merged_dma_reason = 0; |
| int i; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&dev->wl->irq_lock, flags); |
| |
| B43legacy_WARN_ON(b43legacy_status(dev) < |
| B43legacy_STAT_INITIALIZED); |
| |
| reason = dev->irq_reason; |
| for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { |
| dma_reason[i] = dev->dma_reason[i]; |
| merged_dma_reason |= dma_reason[i]; |
| } |
| |
| if (unlikely(reason & B43legacy_IRQ_MAC_TXERR)) |
| b43legacyerr(dev->wl, "MAC transmission error\n"); |
| |
| if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) { |
| b43legacyerr(dev->wl, "PHY transmission error\n"); |
| rmb(); |
| if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { |
| b43legacyerr(dev->wl, "Too many PHY TX errors, " |
| "restarting the controller\n"); |
| b43legacy_controller_restart(dev, "PHY TX errors"); |
| } |
| } |
| |
| if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK | |
| B43legacy_DMAIRQ_NONFATALMASK))) { |
| if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) { |
| b43legacyerr(dev->wl, "Fatal DMA error: " |
| "0x%08X, 0x%08X, 0x%08X, " |
| "0x%08X, 0x%08X, 0x%08X\n", |
| dma_reason[0], dma_reason[1], |
| dma_reason[2], dma_reason[3], |
| dma_reason[4], dma_reason[5]); |
| b43legacy_controller_restart(dev, "DMA error"); |
| mmiowb(); |
| spin_unlock_irqrestore(&dev->wl->irq_lock, flags); |
| return; |
| } |
| if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK) |
| b43legacyerr(dev->wl, "DMA error: " |
| "0x%08X, 0x%08X, 0x%08X, " |
| "0x%08X, 0x%08X, 0x%08X\n", |
| dma_reason[0], dma_reason[1], |
| dma_reason[2], dma_reason[3], |
| dma_reason[4], dma_reason[5]); |
| } |
| |
| if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG)) |
| handle_irq_ucode_debug(dev); |
| if (reason & B43legacy_IRQ_TBTT_INDI) |
| handle_irq_tbtt_indication(dev); |
| if (reason & B43legacy_IRQ_ATIM_END) |
| handle_irq_atim_end(dev); |
| if (reason & B43legacy_IRQ_BEACON) |
| handle_irq_beacon(dev); |
| if (reason & B43legacy_IRQ_PMQ) |
| handle_irq_pmq(dev); |
| if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) |
| ;/*TODO*/ |
| if (reason & B43legacy_IRQ_NOISESAMPLE_OK) |
| handle_irq_noise(dev); |
| |
| /* Check the DMA reason registers for received data. */ |
| if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) { |
| if (b43legacy_using_pio(dev)) |
| b43legacy_pio_rx(dev->pio.queue0); |
| else |
| b43legacy_dma_rx(dev->dma.rx_ring0); |
| } |
| B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE); |
| B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE); |
| if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) { |
| if (b43legacy_using_pio(dev)) |
| b43legacy_pio_rx(dev->pio.queue3); |
| else |
| b43legacy_dma_rx(dev->dma.rx_ring3); |
| } |
| B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE); |
| B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE); |
| |
| if (reason & B43legacy_IRQ_TX_OK) |
| handle_irq_transmit_status(dev); |
| |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); |
| mmiowb(); |
| spin_unlock_irqrestore(&dev->wl->irq_lock, flags); |
| } |
| |
| static void pio_irq_workaround(struct b43legacy_wldev *dev, |
| u16 base, int queueidx) |
| { |
| u16 rxctl; |
| |
| rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL); |
| if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE) |
| dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE; |
| else |
| dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE; |
| } |
| |
| static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason) |
| { |
| if (b43legacy_using_pio(dev) && |
| (dev->dev->id.revision < 3) && |
| (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) { |
| /* Apply a PIO specific workaround to the dma_reasons */ |
| pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0); |
| pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1); |
| pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2); |
| pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3); |
| } |
| |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason); |
| |
| b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON, |
| dev->dma_reason[0]); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON, |
| dev->dma_reason[1]); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON, |
| dev->dma_reason[2]); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON, |
| dev->dma_reason[3]); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON, |
| dev->dma_reason[4]); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON, |
| dev->dma_reason[5]); |
| } |
| |
| /* Interrupt handler top-half */ |
| static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id) |
| { |
| irqreturn_t ret = IRQ_NONE; |
| struct b43legacy_wldev *dev = dev_id; |
| u32 reason; |
| |
| B43legacy_WARN_ON(!dev); |
| |
| spin_lock(&dev->wl->irq_lock); |
| |
| if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED)) |
| /* This can only happen on shared IRQ lines. */ |
| goto out; |
| reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| if (reason == 0xffffffff) /* shared IRQ */ |
| goto out; |
| ret = IRQ_HANDLED; |
| reason &= dev->irq_mask; |
| if (!reason) |
| goto out; |
| |
| dev->dma_reason[0] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA0_REASON) |
| & 0x0001DC00; |
| dev->dma_reason[1] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA1_REASON) |
| & 0x0000DC00; |
| dev->dma_reason[2] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA2_REASON) |
| & 0x0000DC00; |
| dev->dma_reason[3] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA3_REASON) |
| & 0x0001DC00; |
| dev->dma_reason[4] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA4_REASON) |
| & 0x0000DC00; |
| dev->dma_reason[5] = b43legacy_read32(dev, |
| B43legacy_MMIO_DMA5_REASON) |
| & 0x0000DC00; |
| |
| b43legacy_interrupt_ack(dev, reason); |
| /* Disable all IRQs. They are enabled again in the bottom half. */ |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); |
| /* Save the reason code and call our bottom half. */ |
| dev->irq_reason = reason; |
| tasklet_schedule(&dev->isr_tasklet); |
| out: |
| mmiowb(); |
| spin_unlock(&dev->wl->irq_lock); |
| |
| return ret; |
| } |
| |
| static void b43legacy_release_firmware(struct b43legacy_wldev *dev) |
| { |
| release_firmware(dev->fw.ucode); |
| dev->fw.ucode = NULL; |
| release_firmware(dev->fw.pcm); |
| dev->fw.pcm = NULL; |
| release_firmware(dev->fw.initvals); |
| dev->fw.initvals = NULL; |
| release_firmware(dev->fw.initvals_band); |
| dev->fw.initvals_band = NULL; |
| } |
| |
| static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl) |
| { |
| b43legacyerr(wl, "You must go to http://linuxwireless.org/en/users/" |
| "Drivers/b43#devicefirmware " |
| "and download the correct firmware (version 3).\n"); |
| } |
| |
| static int do_request_fw(struct b43legacy_wldev *dev, |
| const char *name, |
| const struct firmware **fw) |
| { |
| char path[sizeof(modparam_fwpostfix) + 32]; |
| struct b43legacy_fw_header *hdr; |
| u32 size; |
| int err; |
| |
| if (!name) |
| return 0; |
| |
| snprintf(path, ARRAY_SIZE(path), |
| "b43legacy%s/%s.fw", |
| modparam_fwpostfix, name); |
| err = request_firmware(fw, path, dev->dev->dev); |
| if (err) { |
| b43legacyerr(dev->wl, "Firmware file \"%s\" not found " |
| "or load failed.\n", path); |
| return err; |
| } |
| if ((*fw)->size < sizeof(struct b43legacy_fw_header)) |
| goto err_format; |
| hdr = (struct b43legacy_fw_header *)((*fw)->data); |
| switch (hdr->type) { |
| case B43legacy_FW_TYPE_UCODE: |
| case B43legacy_FW_TYPE_PCM: |
| size = be32_to_cpu(hdr->size); |
| if (size != (*fw)->size - sizeof(struct b43legacy_fw_header)) |
| goto err_format; |
| /* fallthrough */ |
| case B43legacy_FW_TYPE_IV: |
| if (hdr->ver != 1) |
| goto err_format; |
| break; |
| default: |
| goto err_format; |
| } |
| |
| return err; |
| |
| err_format: |
| b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path); |
| return -EPROTO; |
| } |
| |
| static int b43legacy_request_firmware(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_firmware *fw = &dev->fw; |
| const u8 rev = dev->dev->id.revision; |
| const char *filename; |
| u32 tmshigh; |
| int err; |
| |
| tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); |
| if (!fw->ucode) { |
| if (rev == 2) |
| filename = "ucode2"; |
| else if (rev == 4) |
| filename = "ucode4"; |
| else |
| filename = "ucode5"; |
| err = do_request_fw(dev, filename, &fw->ucode); |
| if (err) |
| goto err_load; |
| } |
| if (!fw->pcm) { |
| if (rev < 5) |
| filename = "pcm4"; |
| else |
| filename = "pcm5"; |
| err = do_request_fw(dev, filename, &fw->pcm); |
| if (err) |
| goto err_load; |
| } |
| if (!fw->initvals) { |
| switch (dev->phy.type) { |
| case B43legacy_PHYTYPE_B: |
| case B43legacy_PHYTYPE_G: |
| if ((rev >= 5) && (rev <= 10)) |
| filename = "b0g0initvals5"; |
| else if (rev == 2 || rev == 4) |
| filename = "b0g0initvals2"; |
| else |
| goto err_no_initvals; |
| break; |
| default: |
| goto err_no_initvals; |
| } |
| err = do_request_fw(dev, filename, &fw->initvals); |
| if (err) |
| goto err_load; |
| } |
| if (!fw->initvals_band) { |
| switch (dev->phy.type) { |
| case B43legacy_PHYTYPE_B: |
| case B43legacy_PHYTYPE_G: |
| if ((rev >= 5) && (rev <= 10)) |
| filename = "b0g0bsinitvals5"; |
| else if (rev >= 11) |
| filename = NULL; |
| else if (rev == 2 || rev == 4) |
| filename = NULL; |
| else |
| goto err_no_initvals; |
| break; |
| default: |
| goto err_no_initvals; |
| } |
| err = do_request_fw(dev, filename, &fw->initvals_band); |
| if (err) |
| goto err_load; |
| } |
| |
| return 0; |
| |
| err_load: |
| b43legacy_print_fw_helptext(dev->wl); |
| goto error; |
| |
| err_no_initvals: |
| err = -ENODEV; |
| b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, " |
| "core rev %u\n", dev->phy.type, rev); |
| goto error; |
| |
| error: |
| b43legacy_release_firmware(dev); |
| return err; |
| } |
| |
| static int b43legacy_upload_microcode(struct b43legacy_wldev *dev) |
| { |
| struct wiphy *wiphy = dev->wl->hw->wiphy; |
| const size_t hdr_len = sizeof(struct b43legacy_fw_header); |
| const __be32 *data; |
| unsigned int i; |
| unsigned int len; |
| u16 fwrev; |
| u16 fwpatch; |
| u16 fwdate; |
| u16 fwtime; |
| u32 tmp, macctl; |
| int err = 0; |
| |
| /* Jump the microcode PSM to offset 0 */ |
| macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN); |
| macctl |= B43legacy_MACCTL_PSM_JMP0; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| /* Zero out all microcode PSM registers and shared memory. */ |
| for (i = 0; i < 64; i++) |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0); |
| for (i = 0; i < 4096; i += 2) |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0); |
| |
| /* Upload Microcode. */ |
| data = (__be32 *) (dev->fw.ucode->data + hdr_len); |
| len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); |
| b43legacy_shm_control_word(dev, |
| B43legacy_SHM_UCODE | |
| B43legacy_SHM_AUTOINC_W, |
| 0x0000); |
| for (i = 0; i < len; i++) { |
| b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, |
| be32_to_cpu(data[i])); |
| udelay(10); |
| } |
| |
| if (dev->fw.pcm) { |
| /* Upload PCM data. */ |
| data = (__be32 *) (dev->fw.pcm->data + hdr_len); |
| len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32); |
| b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA); |
| b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000); |
| /* No need for autoinc bit in SHM_HW */ |
| b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB); |
| for (i = 0; i < len; i++) { |
| b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, |
| be32_to_cpu(data[i])); |
| udelay(10); |
| } |
| } |
| |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, |
| B43legacy_IRQ_ALL); |
| |
| /* Start the microcode PSM */ |
| macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| macctl &= ~B43legacy_MACCTL_PSM_JMP0; |
| macctl |= B43legacy_MACCTL_PSM_RUN; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| |
| /* Wait for the microcode to load and respond */ |
| i = 0; |
| while (1) { |
| tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| if (tmp == B43legacy_IRQ_MAC_SUSPENDED) |
| break; |
| i++; |
| if (i >= B43legacy_IRQWAIT_MAX_RETRIES) { |
| b43legacyerr(dev->wl, "Microcode not responding\n"); |
| b43legacy_print_fw_helptext(dev->wl); |
| err = -ENODEV; |
| goto error; |
| } |
| msleep_interruptible(50); |
| if (signal_pending(current)) { |
| err = -EINTR; |
| goto error; |
| } |
| } |
| /* dummy read follows */ |
| b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| |
| /* Get and check the revisions. */ |
| fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_UCODEREV); |
| fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_UCODEPATCH); |
| fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_UCODEDATE); |
| fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_UCODETIME); |
| |
| if (fwrev > 0x128) { |
| b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE." |
| " Only firmware from binary drivers version 3.x" |
| " is supported. You must change your firmware" |
| " files.\n"); |
| b43legacy_print_fw_helptext(dev->wl); |
| err = -EOPNOTSUPP; |
| goto error; |
| } |
| b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u " |
| "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch, |
| (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, |
| (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, |
| fwtime & 0x1F); |
| |
| dev->fw.rev = fwrev; |
| dev->fw.patch = fwpatch; |
| |
| snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u", |
| dev->fw.rev, dev->fw.patch); |
| wiphy->hw_version = dev->dev->id.coreid; |
| |
| return 0; |
| |
| error: |
| macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| macctl &= ~B43legacy_MACCTL_PSM_RUN; |
| macctl |= B43legacy_MACCTL_PSM_JMP0; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| |
| return err; |
| } |
| |
| static int b43legacy_write_initvals(struct b43legacy_wldev *dev, |
| const struct b43legacy_iv *ivals, |
| size_t count, |
| size_t array_size) |
| { |
| const struct b43legacy_iv *iv; |
| u16 offset; |
| size_t i; |
| bool bit32; |
| |
| BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6); |
| iv = ivals; |
| for (i = 0; i < count; i++) { |
| if (array_size < sizeof(iv->offset_size)) |
| goto err_format; |
| array_size -= sizeof(iv->offset_size); |
| offset = be16_to_cpu(iv->offset_size); |
| bit32 = !!(offset & B43legacy_IV_32BIT); |
| offset &= B43legacy_IV_OFFSET_MASK; |
| if (offset >= 0x1000) |
| goto err_format; |
| if (bit32) { |
| u32 value; |
| |
| if (array_size < sizeof(iv->data.d32)) |
| goto err_format; |
| array_size -= sizeof(iv->data.d32); |
| |
| value = get_unaligned_be32(&iv->data.d32); |
| b43legacy_write32(dev, offset, value); |
| |
| iv = (const struct b43legacy_iv *)((const uint8_t *)iv + |
| sizeof(__be16) + |
| sizeof(__be32)); |
| } else { |
| u16 value; |
| |
| if (array_size < sizeof(iv->data.d16)) |
| goto err_format; |
| array_size -= sizeof(iv->data.d16); |
| |
| value = be16_to_cpu(iv->data.d16); |
| b43legacy_write16(dev, offset, value); |
| |
| iv = (const struct b43legacy_iv *)((const uint8_t *)iv + |
| sizeof(__be16) + |
| sizeof(__be16)); |
| } |
| } |
| if (array_size) |
| goto err_format; |
| |
| return 0; |
| |
| err_format: |
| b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n"); |
| b43legacy_print_fw_helptext(dev->wl); |
| |
| return -EPROTO; |
| } |
| |
| static int b43legacy_upload_initvals(struct b43legacy_wldev *dev) |
| { |
| const size_t hdr_len = sizeof(struct b43legacy_fw_header); |
| const struct b43legacy_fw_header *hdr; |
| struct b43legacy_firmware *fw = &dev->fw; |
| const struct b43legacy_iv *ivals; |
| size_t count; |
| int err; |
| |
| hdr = (const struct b43legacy_fw_header *)(fw->initvals->data); |
| ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len); |
| count = be32_to_cpu(hdr->size); |
| err = b43legacy_write_initvals(dev, ivals, count, |
| fw->initvals->size - hdr_len); |
| if (err) |
| goto out; |
| if (fw->initvals_band) { |
| hdr = (const struct b43legacy_fw_header *) |
| (fw->initvals_band->data); |
| ivals = (const struct b43legacy_iv *)(fw->initvals_band->data |
| + hdr_len); |
| count = be32_to_cpu(hdr->size); |
| err = b43legacy_write_initvals(dev, ivals, count, |
| fw->initvals_band->size - hdr_len); |
| if (err) |
| goto out; |
| } |
| out: |
| |
| return err; |
| } |
| |
| /* Initialize the GPIOs |
| * http://bcm-specs.sipsolutions.net/GPIO |
| */ |
| static int b43legacy_gpio_init(struct b43legacy_wldev *dev) |
| { |
| struct ssb_bus *bus = dev->dev->bus; |
| struct ssb_device *gpiodev, *pcidev = NULL; |
| u32 mask; |
| u32 set; |
| |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, |
| b43legacy_read32(dev, |
| B43legacy_MMIO_MACCTL) |
| & 0xFFFF3FFF); |
| |
| b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, |
| b43legacy_read16(dev, |
| B43legacy_MMIO_GPIO_MASK) |
| | 0x000F); |
| |
| mask = 0x0000001F; |
| set = 0x0000000F; |
| if (dev->dev->bus->chip_id == 0x4301) { |
| mask |= 0x0060; |
| set |= 0x0060; |
| } |
| if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) { |
| b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, |
| b43legacy_read16(dev, |
| B43legacy_MMIO_GPIO_MASK) |
| | 0x0200); |
| mask |= 0x0200; |
| set |= 0x0200; |
| } |
| if (dev->dev->id.revision >= 2) |
| mask |= 0x0010; /* FIXME: This is redundant. */ |
| |
| #ifdef CONFIG_SSB_DRIVER_PCICORE |
| pcidev = bus->pcicore.dev; |
| #endif |
| gpiodev = bus->chipco.dev ? : pcidev; |
| if (!gpiodev) |
| return 0; |
| ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, |
| (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL) |
| & mask) | set); |
| |
| return 0; |
| } |
| |
| /* Turn off all GPIO stuff. Call this on module unload, for example. */ |
| static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev) |
| { |
| struct ssb_bus *bus = dev->dev->bus; |
| struct ssb_device *gpiodev, *pcidev = NULL; |
| |
| #ifdef CONFIG_SSB_DRIVER_PCICORE |
| pcidev = bus->pcicore.dev; |
| #endif |
| gpiodev = bus->chipco.dev ? : pcidev; |
| if (!gpiodev) |
| return; |
| ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0); |
| } |
| |
| /* http://bcm-specs.sipsolutions.net/EnableMac */ |
| void b43legacy_mac_enable(struct b43legacy_wldev *dev) |
| { |
| dev->mac_suspended--; |
| B43legacy_WARN_ON(dev->mac_suspended < 0); |
| B43legacy_WARN_ON(irqs_disabled()); |
| if (dev->mac_suspended == 0) { |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, |
| b43legacy_read32(dev, |
| B43legacy_MMIO_MACCTL) |
| | B43legacy_MACCTL_ENABLED); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, |
| B43legacy_IRQ_MAC_SUSPENDED); |
| /* the next two are dummy reads */ |
| b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| b43legacy_power_saving_ctl_bits(dev, -1, -1); |
| |
| /* Re-enable IRQs. */ |
| spin_lock_irq(&dev->wl->irq_lock); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, |
| dev->irq_mask); |
| spin_unlock_irq(&dev->wl->irq_lock); |
| } |
| } |
| |
| /* http://bcm-specs.sipsolutions.net/SuspendMAC */ |
| void b43legacy_mac_suspend(struct b43legacy_wldev *dev) |
| { |
| int i; |
| u32 tmp; |
| |
| might_sleep(); |
| B43legacy_WARN_ON(irqs_disabled()); |
| B43legacy_WARN_ON(dev->mac_suspended < 0); |
| |
| if (dev->mac_suspended == 0) { |
| /* Mask IRQs before suspending MAC. Otherwise |
| * the MAC stays busy and won't suspend. */ |
| spin_lock_irq(&dev->wl->irq_lock); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); |
| spin_unlock_irq(&dev->wl->irq_lock); |
| b43legacy_synchronize_irq(dev); |
| |
| b43legacy_power_saving_ctl_bits(dev, -1, 1); |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, |
| b43legacy_read32(dev, |
| B43legacy_MMIO_MACCTL) |
| & ~B43legacy_MACCTL_ENABLED); |
| b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| for (i = 40; i; i--) { |
| tmp = b43legacy_read32(dev, |
| B43legacy_MMIO_GEN_IRQ_REASON); |
| if (tmp & B43legacy_IRQ_MAC_SUSPENDED) |
| goto out; |
| msleep(1); |
| } |
| b43legacyerr(dev->wl, "MAC suspend failed\n"); |
| } |
| out: |
| dev->mac_suspended++; |
| } |
| |
| static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| u32 ctl; |
| u16 cfp_pretbtt; |
| |
| ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| /* Reset status to STA infrastructure mode. */ |
| ctl &= ~B43legacy_MACCTL_AP; |
| ctl &= ~B43legacy_MACCTL_KEEP_CTL; |
| ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP; |
| ctl &= ~B43legacy_MACCTL_KEEP_BAD; |
| ctl &= ~B43legacy_MACCTL_PROMISC; |
| ctl &= ~B43legacy_MACCTL_BEACPROMISC; |
| ctl |= B43legacy_MACCTL_INFRA; |
| |
| if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) |
| ctl |= B43legacy_MACCTL_AP; |
| else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)) |
| ctl &= ~B43legacy_MACCTL_INFRA; |
| |
| if (wl->filter_flags & FIF_CONTROL) |
| ctl |= B43legacy_MACCTL_KEEP_CTL; |
| if (wl->filter_flags & FIF_FCSFAIL) |
| ctl |= B43legacy_MACCTL_KEEP_BAD; |
| if (wl->filter_flags & FIF_PLCPFAIL) |
| ctl |= B43legacy_MACCTL_KEEP_BADPLCP; |
| if (wl->filter_flags & FIF_PROMISC_IN_BSS) |
| ctl |= B43legacy_MACCTL_PROMISC; |
| if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) |
| ctl |= B43legacy_MACCTL_BEACPROMISC; |
| |
| /* Workaround: On old hardware the HW-MAC-address-filter |
| * doesn't work properly, so always run promisc in filter |
| * it in software. */ |
| if (dev->dev->id.revision <= 4) |
| ctl |= B43legacy_MACCTL_PROMISC; |
| |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl); |
| |
| cfp_pretbtt = 2; |
| if ((ctl & B43legacy_MACCTL_INFRA) && |
| !(ctl & B43legacy_MACCTL_AP)) { |
| if (dev->dev->bus->chip_id == 0x4306 && |
| dev->dev->bus->chip_rev == 3) |
| cfp_pretbtt = 100; |
| else |
| cfp_pretbtt = 50; |
| } |
| b43legacy_write16(dev, 0x612, cfp_pretbtt); |
| } |
| |
| static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev, |
| u16 rate, |
| int is_ofdm) |
| { |
| u16 offset; |
| |
| if (is_ofdm) { |
| offset = 0x480; |
| offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; |
| } else { |
| offset = 0x4C0; |
| offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2; |
| } |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20, |
| b43legacy_shm_read16(dev, |
| B43legacy_SHM_SHARED, offset)); |
| } |
| |
| static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev) |
| { |
| switch (dev->phy.type) { |
| case B43legacy_PHYTYPE_G: |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1); |
| b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1); |
| /* fallthrough */ |
| case B43legacy_PHYTYPE_B: |
| b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0); |
| b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0); |
| b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0); |
| b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0); |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| } |
| |
| /* Set the TX-Antenna for management frames sent by firmware. */ |
| static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev, |
| int antenna) |
| { |
| u16 ant = 0; |
| u16 tmp; |
| |
| switch (antenna) { |
| case B43legacy_ANTENNA0: |
| ant |= B43legacy_TX4_PHY_ANT0; |
| break; |
| case B43legacy_ANTENNA1: |
| ant |= B43legacy_TX4_PHY_ANT1; |
| break; |
| case B43legacy_ANTENNA_AUTO: |
| ant |= B43legacy_TX4_PHY_ANTLAST; |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| |
| /* FIXME We also need to set the other flags of the PHY control |
| * field somewhere. */ |
| |
| /* For Beacons */ |
| tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_BEACPHYCTL); |
| tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_BEACPHYCTL, tmp); |
| /* For ACK/CTS */ |
| tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_ACKCTSPHYCTL); |
| tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_ACKCTSPHYCTL, tmp); |
| /* For Probe Resposes */ |
| tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_PRPHYCTL); |
| tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_PRPHYCTL, tmp); |
| } |
| |
| /* This is the opposite of b43legacy_chip_init() */ |
| static void b43legacy_chip_exit(struct b43legacy_wldev *dev) |
| { |
| b43legacy_radio_turn_off(dev, 1); |
| b43legacy_gpio_cleanup(dev); |
| /* firmware is released later */ |
| } |
| |
| /* Initialize the chip |
| * http://bcm-specs.sipsolutions.net/ChipInit |
| */ |
| static int b43legacy_chip_init(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| int err; |
| int tmp; |
| u32 value32, macctl; |
| u16 value16; |
| |
| /* Initialize the MAC control */ |
| macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED; |
| if (dev->phy.gmode) |
| macctl |= B43legacy_MACCTL_GMODE; |
| macctl |= B43legacy_MACCTL_INFRA; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| |
| err = b43legacy_request_firmware(dev); |
| if (err) |
| goto out; |
| err = b43legacy_upload_microcode(dev); |
| if (err) |
| goto out; /* firmware is released later */ |
| |
| err = b43legacy_gpio_init(dev); |
| if (err) |
| goto out; /* firmware is released later */ |
| |
| err = b43legacy_upload_initvals(dev); |
| if (err) |
| goto err_gpio_clean; |
| b43legacy_radio_turn_on(dev); |
| |
| b43legacy_write16(dev, 0x03E6, 0x0000); |
| err = b43legacy_phy_init(dev); |
| if (err) |
| goto err_radio_off; |
| |
| /* Select initial Interference Mitigation. */ |
| tmp = phy->interfmode; |
| phy->interfmode = B43legacy_INTERFMODE_NONE; |
| b43legacy_radio_set_interference_mitigation(dev, tmp); |
| |
| b43legacy_phy_set_antenna_diversity(dev); |
| b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT); |
| |
| if (phy->type == B43legacy_PHYTYPE_B) { |
| value16 = b43legacy_read16(dev, 0x005E); |
| value16 |= 0x0004; |
| b43legacy_write16(dev, 0x005E, value16); |
| } |
| b43legacy_write32(dev, 0x0100, 0x01000000); |
| if (dev->dev->id.revision < 5) |
| b43legacy_write32(dev, 0x010C, 0x01000000); |
| |
| value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| value32 &= ~B43legacy_MACCTL_INFRA; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); |
| value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| value32 |= B43legacy_MACCTL_INFRA; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); |
| |
| if (b43legacy_using_pio(dev)) { |
| b43legacy_write32(dev, 0x0210, 0x00000100); |
| b43legacy_write32(dev, 0x0230, 0x00000100); |
| b43legacy_write32(dev, 0x0250, 0x00000100); |
| b43legacy_write32(dev, 0x0270, 0x00000100); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034, |
| 0x0000); |
| } |
| |
| /* Probe Response Timeout value */ |
| /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000); |
| |
| /* Initially set the wireless operation mode. */ |
| b43legacy_adjust_opmode(dev); |
| |
| if (dev->dev->id.revision < 3) { |
| b43legacy_write16(dev, 0x060E, 0x0000); |
| b43legacy_write16(dev, 0x0610, 0x8000); |
| b43legacy_write16(dev, 0x0604, 0x0000); |
| b43legacy_write16(dev, 0x0606, 0x0200); |
| } else { |
| b43legacy_write32(dev, 0x0188, 0x80000000); |
| b43legacy_write32(dev, 0x018C, 0x02000000); |
| } |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00); |
| b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00); |
| |
| value32 = ssb_read32(dev->dev, SSB_TMSLOW); |
| value32 |= 0x00100000; |
| ssb_write32(dev->dev, SSB_TMSLOW, value32); |
| |
| b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY, |
| dev->dev->bus->chipco.fast_pwrup_delay); |
| |
| /* PHY TX errors counter. */ |
| atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); |
| |
| B43legacy_WARN_ON(err != 0); |
| b43legacydbg(dev->wl, "Chip initialized\n"); |
| out: |
| return err; |
| |
| err_radio_off: |
| b43legacy_radio_turn_off(dev, 1); |
| err_gpio_clean: |
| b43legacy_gpio_cleanup(dev); |
| goto out; |
| } |
| |
| static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| |
| if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2) |
| return; |
| |
| b43legacy_mac_suspend(dev); |
| b43legacy_phy_lo_g_measure(dev); |
| b43legacy_mac_enable(dev); |
| } |
| |
| static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev) |
| { |
| b43legacy_phy_lo_mark_all_unused(dev); |
| if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) { |
| b43legacy_mac_suspend(dev); |
| b43legacy_calc_nrssi_slope(dev); |
| b43legacy_mac_enable(dev); |
| } |
| } |
| |
| static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) |
| { |
| /* Update device statistics. */ |
| b43legacy_calculate_link_quality(dev); |
| } |
| |
| static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) |
| { |
| b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */ |
| |
| atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); |
| wmb(); |
| } |
| |
| static void do_periodic_work(struct b43legacy_wldev *dev) |
| { |
| unsigned int state; |
| |
| state = dev->periodic_state; |
| if (state % 8 == 0) |
| b43legacy_periodic_every120sec(dev); |
| if (state % 4 == 0) |
| b43legacy_periodic_every60sec(dev); |
| if (state % 2 == 0) |
| b43legacy_periodic_every30sec(dev); |
| b43legacy_periodic_every15sec(dev); |
| } |
| |
| /* Periodic work locking policy: |
| * The whole periodic work handler is protected by |
| * wl->mutex. If another lock is needed somewhere in the |
| * pwork callchain, it's acquired in-place, where it's needed. |
| */ |
| static void b43legacy_periodic_work_handler(struct work_struct *work) |
| { |
| struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev, |
| periodic_work.work); |
| struct b43legacy_wl *wl = dev->wl; |
| unsigned long delay; |
| |
| mutex_lock(&wl->mutex); |
| |
| if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED)) |
| goto out; |
| if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP)) |
| goto out_requeue; |
| |
| do_periodic_work(dev); |
| |
| dev->periodic_state++; |
| out_requeue: |
| if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST)) |
| delay = msecs_to_jiffies(50); |
| else |
| delay = round_jiffies_relative(HZ * 15); |
| ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay); |
| out: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev) |
| { |
| struct delayed_work *work = &dev->periodic_work; |
| |
| dev->periodic_state = 0; |
| INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler); |
| ieee80211_queue_delayed_work(dev->wl->hw, work, 0); |
| } |
| |
| /* Validate access to the chip (SHM) */ |
| static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev) |
| { |
| u32 value; |
| u32 shm_backup; |
| |
| shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0); |
| b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA); |
| if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != |
| 0xAA5555AA) |
| goto error; |
| b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55); |
| if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != |
| 0x55AAAA55) |
| goto error; |
| b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup); |
| |
| value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| if ((value | B43legacy_MACCTL_GMODE) != |
| (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED)) |
| goto error; |
| |
| value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); |
| if (value) |
| goto error; |
| |
| return 0; |
| error: |
| b43legacyerr(dev->wl, "Failed to validate the chipaccess\n"); |
| return -ENODEV; |
| } |
| |
| static void b43legacy_security_init(struct b43legacy_wldev *dev) |
| { |
| dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; |
| B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); |
| dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| 0x0056); |
| /* KTP is a word address, but we address SHM bytewise. |
| * So multiply by two. |
| */ |
| dev->ktp *= 2; |
| if (dev->dev->id.revision >= 5) |
| /* Number of RCMTA address slots */ |
| b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT, |
| dev->max_nr_keys - 8); |
| } |
| |
| #ifdef CONFIG_B43LEGACY_HWRNG |
| static int b43legacy_rng_read(struct hwrng *rng, u32 *data) |
| { |
| struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv; |
| unsigned long flags; |
| |
| /* Don't take wl->mutex here, as it could deadlock with |
| * hwrng internal locking. It's not needed to take |
| * wl->mutex here, anyway. */ |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| return (sizeof(u16)); |
| } |
| #endif |
| |
| static void b43legacy_rng_exit(struct b43legacy_wl *wl) |
| { |
| #ifdef CONFIG_B43LEGACY_HWRNG |
| if (wl->rng_initialized) |
| hwrng_unregister(&wl->rng); |
| #endif |
| } |
| |
| static int b43legacy_rng_init(struct b43legacy_wl *wl) |
| { |
| int err = 0; |
| |
| #ifdef CONFIG_B43LEGACY_HWRNG |
| snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), |
| "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); |
| wl->rng.name = wl->rng_name; |
| wl->rng.data_read = b43legacy_rng_read; |
| wl->rng.priv = (unsigned long)wl; |
| wl->rng_initialized = 1; |
| err = hwrng_register(&wl->rng); |
| if (err) { |
| wl->rng_initialized = 0; |
| b43legacyerr(wl, "Failed to register the random " |
| "number generator (%d)\n", err); |
| } |
| |
| #endif |
| return err; |
| } |
| |
| static void b43legacy_op_tx(struct ieee80211_hw *hw, |
| struct sk_buff *skb) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| int err = -ENODEV; |
| unsigned long flags; |
| |
| if (unlikely(!dev)) |
| goto out; |
| if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED)) |
| goto out; |
| /* DMA-TX is done without a global lock. */ |
| if (b43legacy_using_pio(dev)) { |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| err = b43legacy_pio_tx(dev, skb); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| } else |
| err = b43legacy_dma_tx(dev, skb); |
| out: |
| if (unlikely(err)) { |
| /* Drop the packet. */ |
| dev_kfree_skb_any(skb); |
| } |
| } |
| |
| static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, u16 queue, |
| const struct ieee80211_tx_queue_params *params) |
| { |
| return 0; |
| } |
| |
| static int b43legacy_op_get_stats(struct ieee80211_hw *hw, |
| struct ieee80211_low_level_stats *stats) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| memcpy(stats, &wl->ieee_stats, sizeof(*stats)); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| return 0; |
| } |
| |
| static const char *phymode_to_string(unsigned int phymode) |
| { |
| switch (phymode) { |
| case B43legacy_PHYMODE_B: |
| return "B"; |
| case B43legacy_PHYMODE_G: |
| return "G"; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| return ""; |
| } |
| |
| static int find_wldev_for_phymode(struct b43legacy_wl *wl, |
| unsigned int phymode, |
| struct b43legacy_wldev **dev, |
| bool *gmode) |
| { |
| struct b43legacy_wldev *d; |
| |
| list_for_each_entry(d, &wl->devlist, list) { |
| if (d->phy.possible_phymodes & phymode) { |
| /* Ok, this device supports the PHY-mode. |
| * Set the gmode bit. */ |
| *gmode = 1; |
| *dev = d; |
| |
| return 0; |
| } |
| } |
| |
| return -ESRCH; |
| } |
| |
| static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev) |
| { |
| struct ssb_device *sdev = dev->dev; |
| u32 tmslow; |
| |
| tmslow = ssb_read32(sdev, SSB_TMSLOW); |
| tmslow &= ~B43legacy_TMSLOW_GMODE; |
| tmslow |= B43legacy_TMSLOW_PHYRESET; |
| tmslow |= SSB_TMSLOW_FGC; |
| ssb_write32(sdev, SSB_TMSLOW, tmslow); |
| msleep(1); |
| |
| tmslow = ssb_read32(sdev, SSB_TMSLOW); |
| tmslow &= ~SSB_TMSLOW_FGC; |
| tmslow |= B43legacy_TMSLOW_PHYRESET; |
| ssb_write32(sdev, SSB_TMSLOW, tmslow); |
| msleep(1); |
| } |
| |
| /* Expects wl->mutex locked */ |
| static int b43legacy_switch_phymode(struct b43legacy_wl *wl, |
| unsigned int new_mode) |
| { |
| struct b43legacy_wldev *uninitialized_var(up_dev); |
| struct b43legacy_wldev *down_dev; |
| int err; |
| bool gmode = 0; |
| int prev_status; |
| |
| err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); |
| if (err) { |
| b43legacyerr(wl, "Could not find a device for %s-PHY mode\n", |
| phymode_to_string(new_mode)); |
| return err; |
| } |
| if ((up_dev == wl->current_dev) && |
| (!!wl->current_dev->phy.gmode == !!gmode)) |
| /* This device is already running. */ |
| return 0; |
| b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n", |
| phymode_to_string(new_mode)); |
| down_dev = wl->current_dev; |
| |
| prev_status = b43legacy_status(down_dev); |
| /* Shutdown the currently running core. */ |
| if (prev_status >= B43legacy_STAT_STARTED) |
| b43legacy_wireless_core_stop(down_dev); |
| if (prev_status >= B43legacy_STAT_INITIALIZED) |
| b43legacy_wireless_core_exit(down_dev); |
| |
| if (down_dev != up_dev) |
| /* We switch to a different core, so we put PHY into |
| * RESET on the old core. */ |
| b43legacy_put_phy_into_reset(down_dev); |
| |
| /* Now start the new core. */ |
| up_dev->phy.gmode = gmode; |
| if (prev_status >= B43legacy_STAT_INITIALIZED) { |
| err = b43legacy_wireless_core_init(up_dev); |
| if (err) { |
| b43legacyerr(wl, "Fatal: Could not initialize device" |
| " for newly selected %s-PHY mode\n", |
| phymode_to_string(new_mode)); |
| goto init_failure; |
| } |
| } |
| if (prev_status >= B43legacy_STAT_STARTED) { |
| err = b43legacy_wireless_core_start(up_dev); |
| if (err) { |
| b43legacyerr(wl, "Fatal: Coult not start device for " |
| "newly selected %s-PHY mode\n", |
| phymode_to_string(new_mode)); |
| b43legacy_wireless_core_exit(up_dev); |
| goto init_failure; |
| } |
| } |
| B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status); |
| |
| b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0); |
| |
| wl->current_dev = up_dev; |
| |
| return 0; |
| init_failure: |
| /* Whoops, failed to init the new core. No core is operating now. */ |
| wl->current_dev = NULL; |
| return err; |
| } |
| |
| /* Write the short and long frame retry limit values. */ |
| static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev, |
| unsigned int short_retry, |
| unsigned int long_retry) |
| { |
| /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing |
| * the chip-internal counter. */ |
| short_retry = min(short_retry, (unsigned int)0xF); |
| long_retry = min(long_retry, (unsigned int)0xF); |
| |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry); |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry); |
| } |
| |
| static int b43legacy_op_dev_config(struct ieee80211_hw *hw, |
| u32 changed) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev; |
| struct b43legacy_phy *phy; |
| struct ieee80211_conf *conf = &hw->conf; |
| unsigned long flags; |
| unsigned int new_phymode = 0xFFFF; |
| int antenna_tx; |
| int antenna_rx; |
| int err = 0; |
| |
| antenna_tx = B43legacy_ANTENNA_DEFAULT; |
| antenna_rx = B43legacy_ANTENNA_DEFAULT; |
| |
| mutex_lock(&wl->mutex); |
| dev = wl->current_dev; |
| phy = &dev->phy; |
| |
| if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) |
| b43legacy_set_retry_limits(dev, |
| conf->short_frame_max_tx_count, |
| conf->long_frame_max_tx_count); |
| changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS; |
| if (!changed) |
| goto out_unlock_mutex; |
| |
| /* Switch the PHY mode (if necessary). */ |
| switch (conf->channel->band) { |
| case IEEE80211_BAND_2GHZ: |
| if (phy->type == B43legacy_PHYTYPE_B) |
| new_phymode = B43legacy_PHYMODE_B; |
| else |
| new_phymode = B43legacy_PHYMODE_G; |
| break; |
| default: |
| B43legacy_WARN_ON(1); |
| } |
| err = b43legacy_switch_phymode(wl, new_phymode); |
| if (err) |
| goto out_unlock_mutex; |
| |
| /* Disable IRQs while reconfiguring the device. |
| * This makes it possible to drop the spinlock throughout |
| * the reconfiguration process. */ |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| goto out_unlock_mutex; |
| } |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| b43legacy_synchronize_irq(dev); |
| |
| /* Switch to the requested channel. |
| * The firmware takes care of races with the TX handler. */ |
| if (conf->channel->hw_value != phy->channel) |
| b43legacy_radio_selectchannel(dev, conf->channel->hw_value, 0); |
| |
| dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR); |
| |
| /* Adjust the desired TX power level. */ |
| if (conf->power_level != 0) { |
| if (conf->power_level != phy->power_level) { |
| phy->power_level = conf->power_level; |
| b43legacy_phy_xmitpower(dev); |
| } |
| } |
| |
| /* Antennas for RX and management frame TX. */ |
| b43legacy_mgmtframe_txantenna(dev, antenna_tx); |
| |
| if (wl->radio_enabled != phy->radio_on) { |
| if (wl->radio_enabled) { |
| b43legacy_radio_turn_on(dev); |
| b43legacyinfo(dev->wl, "Radio turned on by software\n"); |
| if (!dev->radio_hw_enable) |
| b43legacyinfo(dev->wl, "The hardware RF-kill" |
| " button still turns the radio" |
| " physically off. Press the" |
| " button to turn it on.\n"); |
| } else { |
| b43legacy_radio_turn_off(dev, 0); |
| b43legacyinfo(dev->wl, "Radio turned off by" |
| " software\n"); |
| } |
| } |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); |
| mmiowb(); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| out_unlock_mutex: |
| mutex_unlock(&wl->mutex); |
| |
| return err; |
| } |
| |
| static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates) |
| { |
| struct ieee80211_supported_band *sband = |
| dev->wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ]; |
| struct ieee80211_rate *rate; |
| int i; |
| u16 basic, direct, offset, basic_offset, rateptr; |
| |
| for (i = 0; i < sband->n_bitrates; i++) { |
| rate = &sband->bitrates[i]; |
| |
| if (b43legacy_is_cck_rate(rate->hw_value)) { |
| direct = B43legacy_SHM_SH_CCKDIRECT; |
| basic = B43legacy_SHM_SH_CCKBASIC; |
| offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); |
| offset &= 0xF; |
| } else { |
| direct = B43legacy_SHM_SH_OFDMDIRECT; |
| basic = B43legacy_SHM_SH_OFDMBASIC; |
| offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); |
| offset &= 0xF; |
| } |
| |
| rate = ieee80211_get_response_rate(sband, brates, rate->bitrate); |
| |
| if (b43legacy_is_cck_rate(rate->hw_value)) { |
| basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); |
| basic_offset &= 0xF; |
| } else { |
| basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); |
| basic_offset &= 0xF; |
| } |
| |
| /* |
| * Get the pointer that we need to point to |
| * from the direct map |
| */ |
| rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, |
| direct + 2 * basic_offset); |
| /* and write it to the basic map */ |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| basic + 2 * offset, rateptr); |
| } |
| } |
| |
| static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *conf, |
| u32 changed) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev; |
| struct b43legacy_phy *phy; |
| unsigned long flags; |
| |
| mutex_lock(&wl->mutex); |
| B43legacy_WARN_ON(wl->vif != vif); |
| |
| dev = wl->current_dev; |
| phy = &dev->phy; |
| |
| /* Disable IRQs while reconfiguring the device. |
| * This makes it possible to drop the spinlock throughout |
| * the reconfiguration process. */ |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| goto out_unlock_mutex; |
| } |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); |
| |
| if (changed & BSS_CHANGED_BSSID) { |
| b43legacy_synchronize_irq(dev); |
| |
| if (conf->bssid) |
| memcpy(wl->bssid, conf->bssid, ETH_ALEN); |
| else |
| memset(wl->bssid, 0, ETH_ALEN); |
| } |
| |
| if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) { |
| if (changed & BSS_CHANGED_BEACON && |
| (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || |
| b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) |
| b43legacy_update_templates(wl); |
| |
| if (changed & BSS_CHANGED_BSSID) |
| b43legacy_write_mac_bssid_templates(dev); |
| } |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| b43legacy_mac_suspend(dev); |
| |
| if (changed & BSS_CHANGED_BEACON_INT && |
| (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || |
| b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) |
| b43legacy_set_beacon_int(dev, conf->beacon_int); |
| |
| if (changed & BSS_CHANGED_BASIC_RATES) |
| b43legacy_update_basic_rates(dev, conf->basic_rates); |
| |
| if (changed & BSS_CHANGED_ERP_SLOT) { |
| if (conf->use_short_slot) |
| b43legacy_short_slot_timing_enable(dev); |
| else |
| b43legacy_short_slot_timing_disable(dev); |
| } |
| |
| b43legacy_mac_enable(dev); |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); |
| /* XXX: why? */ |
| mmiowb(); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| out_unlock_mutex: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static void b43legacy_op_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed, |
| unsigned int *fflags,u64 multicast) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| unsigned long flags; |
| |
| if (!dev) { |
| *fflags = 0; |
| return; |
| } |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| *fflags &= FIF_PROMISC_IN_BSS | |
| FIF_ALLMULTI | |
| FIF_FCSFAIL | |
| FIF_PLCPFAIL | |
| FIF_CONTROL | |
| FIF_OTHER_BSS | |
| FIF_BCN_PRBRESP_PROMISC; |
| |
| changed &= FIF_PROMISC_IN_BSS | |
| FIF_ALLMULTI | |
| FIF_FCSFAIL | |
| FIF_PLCPFAIL | |
| FIF_CONTROL | |
| FIF_OTHER_BSS | |
| FIF_BCN_PRBRESP_PROMISC; |
| |
| wl->filter_flags = *fflags; |
| |
| if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) |
| b43legacy_adjust_opmode(dev); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| } |
| |
| /* Locking: wl->mutex */ |
| static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| unsigned long flags; |
| |
| if (b43legacy_status(dev) < B43legacy_STAT_STARTED) |
| return; |
| |
| /* Disable and sync interrupts. We must do this before than |
| * setting the status to INITIALIZED, as the interrupt handler |
| * won't care about IRQs then. */ |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); |
| b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */ |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| b43legacy_synchronize_irq(dev); |
| |
| b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); |
| |
| mutex_unlock(&wl->mutex); |
| /* Must unlock as it would otherwise deadlock. No races here. |
| * Cancel the possibly running self-rearming periodic work. */ |
| cancel_delayed_work_sync(&dev->periodic_work); |
| mutex_lock(&wl->mutex); |
| |
| ieee80211_stop_queues(wl->hw); /* FIXME this could cause a deadlock */ |
| |
| b43legacy_mac_suspend(dev); |
| free_irq(dev->dev->irq, dev); |
| b43legacydbg(wl, "Wireless interface stopped\n"); |
| } |
| |
| /* Locking: wl->mutex */ |
| static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev) |
| { |
| int err; |
| |
| B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED); |
| |
| drain_txstatus_queue(dev); |
| err = request_irq(dev->dev->irq, b43legacy_interrupt_handler, |
| IRQF_SHARED, KBUILD_MODNAME, dev); |
| if (err) { |
| b43legacyerr(dev->wl, "Cannot request IRQ-%d\n", |
| dev->dev->irq); |
| goto out; |
| } |
| /* We are ready to run. */ |
| ieee80211_wake_queues(dev->wl->hw); |
| b43legacy_set_status(dev, B43legacy_STAT_STARTED); |
| |
| /* Start data flow (TX/RX) */ |
| b43legacy_mac_enable(dev); |
| b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); |
| |
| /* Start maintenance work */ |
| b43legacy_periodic_tasks_setup(dev); |
| |
| b43legacydbg(dev->wl, "Wireless interface started\n"); |
| out: |
| return err; |
| } |
| |
| /* Get PHY and RADIO versioning numbers */ |
| static int b43legacy_phy_versioning(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| u32 tmp; |
| u8 analog_type; |
| u8 phy_type; |
| u8 phy_rev; |
| u16 radio_manuf; |
| u16 radio_ver; |
| u16 radio_rev; |
| int unsupported = 0; |
| |
| /* Get PHY versioning */ |
| tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); |
| analog_type = (tmp & B43legacy_PHYVER_ANALOG) |
| >> B43legacy_PHYVER_ANALOG_SHIFT; |
| phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT; |
| phy_rev = (tmp & B43legacy_PHYVER_VERSION); |
| switch (phy_type) { |
| case B43legacy_PHYTYPE_B: |
| if (phy_rev != 2 && phy_rev != 4 |
| && phy_rev != 6 && phy_rev != 7) |
| unsupported = 1; |
| break; |
| case B43legacy_PHYTYPE_G: |
| if (phy_rev > 8) |
| unsupported = 1; |
| break; |
| default: |
| unsupported = 1; |
| }; |
| if (unsupported) { |
| b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY " |
| "(Analog %u, Type %u, Revision %u)\n", |
| analog_type, phy_type, phy_rev); |
| return -EOPNOTSUPP; |
| } |
| b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", |
| analog_type, phy_type, phy_rev); |
| |
| |
| /* Get RADIO versioning */ |
| if (dev->dev->bus->chip_id == 0x4317) { |
| if (dev->dev->bus->chip_rev == 0) |
| tmp = 0x3205017F; |
| else if (dev->dev->bus->chip_rev == 1) |
| tmp = 0x4205017F; |
| else |
| tmp = 0x5205017F; |
| } else { |
| b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, |
| B43legacy_RADIOCTL_ID); |
| tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH); |
| tmp <<= 16; |
| b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, |
| B43legacy_RADIOCTL_ID); |
| tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); |
| } |
| radio_manuf = (tmp & 0x00000FFF); |
| radio_ver = (tmp & 0x0FFFF000) >> 12; |
| radio_rev = (tmp & 0xF0000000) >> 28; |
| switch (phy_type) { |
| case B43legacy_PHYTYPE_B: |
| if ((radio_ver & 0xFFF0) != 0x2050) |
| unsupported = 1; |
| break; |
| case B43legacy_PHYTYPE_G: |
| if (radio_ver != 0x2050) |
| unsupported = 1; |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| if (unsupported) { |
| b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO " |
| "(Manuf 0x%X, Version 0x%X, Revision %u)\n", |
| radio_manuf, radio_ver, radio_rev); |
| return -EOPNOTSUPP; |
| } |
| b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X," |
| " Revision %u\n", radio_manuf, radio_ver, radio_rev); |
| |
| |
| phy->radio_manuf = radio_manuf; |
| phy->radio_ver = radio_ver; |
| phy->radio_rev = radio_rev; |
| |
| phy->analog = analog_type; |
| phy->type = phy_type; |
| phy->rev = phy_rev; |
| |
| return 0; |
| } |
| |
| static void setup_struct_phy_for_init(struct b43legacy_wldev *dev, |
| struct b43legacy_phy *phy) |
| { |
| struct b43legacy_lopair *lo; |
| int i; |
| |
| memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); |
| memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); |
| |
| /* Assume the radio is enabled. If it's not enabled, the state will |
| * immediately get fixed on the first periodic work run. */ |
| dev->radio_hw_enable = 1; |
| |
| phy->savedpctlreg = 0xFFFF; |
| phy->aci_enable = 0; |
| phy->aci_wlan_automatic = 0; |
| phy->aci_hw_rssi = 0; |
| |
| lo = phy->_lo_pairs; |
| if (lo) |
| memset(lo, 0, sizeof(struct b43legacy_lopair) * |
| B43legacy_LO_COUNT); |
| phy->max_lb_gain = 0; |
| phy->trsw_rx_gain = 0; |
| |
| /* Set default attenuation values. */ |
| phy->bbatt = b43legacy_default_baseband_attenuation(dev); |
| phy->rfatt = b43legacy_default_radio_attenuation(dev); |
| phy->txctl1 = b43legacy_default_txctl1(dev); |
| phy->txpwr_offset = 0; |
| |
| /* NRSSI */ |
| phy->nrssislope = 0; |
| for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) |
| phy->nrssi[i] = -1000; |
| for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) |
| phy->nrssi_lt[i] = i; |
| |
| phy->lofcal = 0xFFFF; |
| phy->initval = 0xFFFF; |
| |
| phy->interfmode = B43legacy_INTERFMODE_NONE; |
| phy->channel = 0xFF; |
| } |
| |
| static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev) |
| { |
| /* Flags */ |
| dev->dfq_valid = 0; |
| |
| /* Stats */ |
| memset(&dev->stats, 0, sizeof(dev->stats)); |
| |
| setup_struct_phy_for_init(dev, &dev->phy); |
| |
| /* IRQ related flags */ |
| dev->irq_reason = 0; |
| memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); |
| dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE; |
| |
| dev->mac_suspended = 1; |
| |
| /* Noise calculation context */ |
| memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); |
| } |
| |
| static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev, |
| bool idle) { |
| u16 pu_delay = 1050; |
| |
| if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle) |
| pu_delay = 500; |
| if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8)) |
| pu_delay = max(pu_delay, (u16)2400); |
| |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_SPUWKUP, pu_delay); |
| } |
| |
| /* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ |
| static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev) |
| { |
| u16 pretbtt; |
| |
| /* The time value is in microseconds. */ |
| if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) |
| pretbtt = 2; |
| else |
| pretbtt = 250; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_PRETBTT, pretbtt); |
| b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt); |
| } |
| |
| /* Shutdown a wireless core */ |
| /* Locking: wl->mutex */ |
| static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| u32 macctl; |
| |
| B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED); |
| if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED) |
| return; |
| b43legacy_set_status(dev, B43legacy_STAT_UNINIT); |
| |
| /* Stop the microcode PSM. */ |
| macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); |
| macctl &= ~B43legacy_MACCTL_PSM_RUN; |
| macctl |= B43legacy_MACCTL_PSM_JMP0; |
| b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); |
| |
| b43legacy_leds_exit(dev); |
| b43legacy_rng_exit(dev->wl); |
| b43legacy_pio_free(dev); |
| b43legacy_dma_free(dev); |
| b43legacy_chip_exit(dev); |
| b43legacy_radio_turn_off(dev, 1); |
| b43legacy_switch_analog(dev, 0); |
| if (phy->dyn_tssi_tbl) |
| kfree(phy->tssi2dbm); |
| kfree(phy->lo_control); |
| phy->lo_control = NULL; |
| if (dev->wl->current_beacon) { |
| dev_kfree_skb_any(dev->wl->current_beacon); |
| dev->wl->current_beacon = NULL; |
| } |
| |
| ssb_device_disable(dev->dev, 0); |
| ssb_bus_may_powerdown(dev->dev->bus); |
| } |
| |
| static void prepare_phy_data_for_init(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_phy *phy = &dev->phy; |
| int i; |
| |
| /* Set default attenuation values. */ |
| phy->bbatt = b43legacy_default_baseband_attenuation(dev); |
| phy->rfatt = b43legacy_default_radio_attenuation(dev); |
| phy->txctl1 = b43legacy_default_txctl1(dev); |
| phy->txctl2 = 0xFFFF; |
| phy->txpwr_offset = 0; |
| |
| /* NRSSI */ |
| phy->nrssislope = 0; |
| for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) |
| phy->nrssi[i] = -1000; |
| for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) |
| phy->nrssi_lt[i] = i; |
| |
| phy->lofcal = 0xFFFF; |
| phy->initval = 0xFFFF; |
| |
| phy->aci_enable = 0; |
| phy->aci_wlan_automatic = 0; |
| phy->aci_hw_rssi = 0; |
| |
| phy->antenna_diversity = 0xFFFF; |
| memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); |
| memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); |
| |
| /* Flags */ |
| phy->calibrated = 0; |
| |
| if (phy->_lo_pairs) |
| memset(phy->_lo_pairs, 0, |
| sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT); |
| memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain)); |
| } |
| |
| /* Initialize a wireless core */ |
| static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| struct ssb_bus *bus = dev->dev->bus; |
| struct b43legacy_phy *phy = &dev->phy; |
| struct ssb_sprom *sprom = &dev->dev->bus->sprom; |
| int err; |
| u32 hf; |
| u32 tmp; |
| |
| B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); |
| |
| err = ssb_bus_powerup(bus, 0); |
| if (err) |
| goto out; |
| if (!ssb_device_is_enabled(dev->dev)) { |
| tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0; |
| b43legacy_wireless_core_reset(dev, tmp); |
| } |
| |
| if ((phy->type == B43legacy_PHYTYPE_B) || |
| (phy->type == B43legacy_PHYTYPE_G)) { |
| phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair) |
| * B43legacy_LO_COUNT, |
| GFP_KERNEL); |
| if (!phy->_lo_pairs) |
| return -ENOMEM; |
| } |
| setup_struct_wldev_for_init(dev); |
| |
| err = b43legacy_phy_init_tssi2dbm_table(dev); |
| if (err) |
| goto err_kfree_lo_control; |
| |
| /* Enable IRQ routing to this device. */ |
| ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); |
| |
| prepare_phy_data_for_init(dev); |
| b43legacy_phy_calibrate(dev); |
| err = b43legacy_chip_init(dev); |
| if (err) |
| goto err_kfree_tssitbl; |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_WLCOREREV, |
| dev->dev->id.revision); |
| hf = b43legacy_hf_read(dev); |
| if (phy->type == B43legacy_PHYTYPE_G) { |
| hf |= B43legacy_HF_SYMW; |
| if (phy->rev == 1) |
| hf |= B43legacy_HF_GDCW; |
| if (sprom->boardflags_lo & B43legacy_BFL_PACTRL) |
| hf |= B43legacy_HF_OFDMPABOOST; |
| } else if (phy->type == B43legacy_PHYTYPE_B) { |
| hf |= B43legacy_HF_SYMW; |
| if (phy->rev >= 2 && phy->radio_ver == 0x2050) |
| hf &= ~B43legacy_HF_GDCW; |
| } |
| b43legacy_hf_write(dev, hf); |
| |
| b43legacy_set_retry_limits(dev, |
| B43legacy_DEFAULT_SHORT_RETRY_LIMIT, |
| B43legacy_DEFAULT_LONG_RETRY_LIMIT); |
| |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| 0x0044, 3); |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| 0x0046, 2); |
| |
| /* Disable sending probe responses from firmware. |
| * Setting the MaxTime to one usec will always trigger |
| * a timeout, so we never send any probe resp. |
| * A timeout of zero is infinite. */ |
| b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, |
| B43legacy_SHM_SH_PRMAXTIME, 1); |
| |
| b43legacy_rate_memory_init(dev); |
| |
| /* Minimum Contention Window */ |
| if (phy->type == B43legacy_PHYTYPE_B) |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, |
| 0x0003, 31); |
| else |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, |
| 0x0003, 15); |
| /* Maximum Contention Window */ |
| b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, |
| 0x0004, 1023); |
| |
| do { |
| if (b43legacy_using_pio(dev)) |
| err = b43legacy_pio_init(dev); |
| else { |
| err = b43legacy_dma_init(dev); |
| if (!err) |
| b43legacy_qos_init(dev); |
| } |
| } while (err == -EAGAIN); |
| if (err) |
| goto err_chip_exit; |
| |
| b43legacy_set_synth_pu_delay(dev, 1); |
| |
| ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ |
| b43legacy_upload_card_macaddress(dev); |
| b43legacy_security_init(dev); |
| b43legacy_rng_init(wl); |
| |
| ieee80211_wake_queues(dev->wl->hw); |
| b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); |
| |
| b43legacy_leds_init(dev); |
| out: |
| return err; |
| |
| err_chip_exit: |
| b43legacy_chip_exit(dev); |
| err_kfree_tssitbl: |
| if (phy->dyn_tssi_tbl) |
| kfree(phy->tssi2dbm); |
| err_kfree_lo_control: |
| kfree(phy->lo_control); |
| phy->lo_control = NULL; |
| ssb_bus_may_powerdown(bus); |
| B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); |
| return err; |
| } |
| |
| static int b43legacy_op_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev; |
| unsigned long flags; |
| int err = -EOPNOTSUPP; |
| |
| /* TODO: allow WDS/AP devices to coexist */ |
| |
| if (vif->type != NL80211_IFTYPE_AP && |
| vif->type != NL80211_IFTYPE_STATION && |
| vif->type != NL80211_IFTYPE_WDS && |
| vif->type != NL80211_IFTYPE_ADHOC) |
| return -EOPNOTSUPP; |
| |
| mutex_lock(&wl->mutex); |
| if (wl->operating) |
| goto out_mutex_unlock; |
| |
| b43legacydbg(wl, "Adding Interface type %d\n", vif->type); |
| |
| dev = wl->current_dev; |
| wl->operating = 1; |
| wl->vif = vif; |
| wl->if_type = vif->type; |
| memcpy(wl->mac_addr, vif->addr, ETH_ALEN); |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_adjust_opmode(dev); |
| b43legacy_set_pretbtt(dev); |
| b43legacy_set_synth_pu_delay(dev, 0); |
| b43legacy_upload_card_macaddress(dev); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| err = 0; |
| out_mutex_unlock: |
| mutex_unlock(&wl->mutex); |
| |
| return err; |
| } |
| |
| static void b43legacy_op_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| unsigned long flags; |
| |
| b43legacydbg(wl, "Removing Interface type %d\n", vif->type); |
| |
| mutex_lock(&wl->mutex); |
| |
| B43legacy_WARN_ON(!wl->operating); |
| B43legacy_WARN_ON(wl->vif != vif); |
| wl->vif = NULL; |
| |
| wl->operating = 0; |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_adjust_opmode(dev); |
| memset(wl->mac_addr, 0, ETH_ALEN); |
| b43legacy_upload_card_macaddress(dev); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int b43legacy_op_start(struct ieee80211_hw *hw) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| int did_init = 0; |
| int err = 0; |
| |
| /* Kill all old instance specific information to make sure |
| * the card won't use it in the short timeframe between start |
| * and mac80211 reconfiguring it. */ |
| memset(wl->bssid, 0, ETH_ALEN); |
| memset(wl->mac_addr, 0, ETH_ALEN); |
| wl->filter_flags = 0; |
| wl->beacon0_uploaded = 0; |
| wl->beacon1_uploaded = 0; |
| wl->beacon_templates_virgin = 1; |
| wl->radio_enabled = 1; |
| |
| mutex_lock(&wl->mutex); |
| |
| if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { |
| err = b43legacy_wireless_core_init(dev); |
| if (err) |
| goto out_mutex_unlock; |
| did_init = 1; |
| } |
| |
| if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { |
| err = b43legacy_wireless_core_start(dev); |
| if (err) { |
| if (did_init) |
| b43legacy_wireless_core_exit(dev); |
| goto out_mutex_unlock; |
| } |
| } |
| |
| wiphy_rfkill_start_polling(hw->wiphy); |
| |
| out_mutex_unlock: |
| mutex_unlock(&wl->mutex); |
| |
| return err; |
| } |
| |
| static void b43legacy_op_stop(struct ieee80211_hw *hw) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| |
| cancel_work_sync(&(wl->beacon_update_trigger)); |
| |
| mutex_lock(&wl->mutex); |
| if (b43legacy_status(dev) >= B43legacy_STAT_STARTED) |
| b43legacy_wireless_core_stop(dev); |
| b43legacy_wireless_core_exit(dev); |
| wl->radio_enabled = 0; |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw, |
| struct ieee80211_sta *sta, bool set) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&wl->irq_lock, flags); |
| b43legacy_update_templates(wl); |
| spin_unlock_irqrestore(&wl->irq_lock, flags); |
| |
| return 0; |
| } |
| |
| static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx, |
| struct survey_info *survey) |
| { |
| struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); |
| struct b43legacy_wldev *dev = wl->current_dev; |
| struct ieee80211_conf *conf = &hw->conf; |
| |
| if (idx != 0) |
| return -ENOENT; |
| |
| survey->channel = conf->channel; |
| survey->filled = SURVEY_INFO_NOISE_DBM; |
| survey->noise = dev->stats.link_noise; |
| |
| return 0; |
| } |
| |
| static const struct ieee80211_ops b43legacy_hw_ops = { |
| .tx = b43legacy_op_tx, |
| .conf_tx = b43legacy_op_conf_tx, |
| .add_interface = b43legacy_op_add_interface, |
| .remove_interface = b43legacy_op_remove_interface, |
| .config = b43legacy_op_dev_config, |
| .bss_info_changed = b43legacy_op_bss_info_changed, |
| .configure_filter = b43legacy_op_configure_filter, |
| .get_stats = b43legacy_op_get_stats, |
| .start = b43legacy_op_start, |
| .stop = b43legacy_op_stop, |
| .set_tim = b43legacy_op_beacon_set_tim, |
| .get_survey = b43legacy_op_get_survey, |
| .rfkill_poll = b43legacy_rfkill_poll, |
| }; |
| |
| /* Hard-reset the chip. Do not call this directly. |
| * Use b43legacy_controller_restart() |
| */ |
| static void b43legacy_chip_reset(struct work_struct *work) |
| { |
| struct b43legacy_wldev *dev = |
| container_of(work, struct b43legacy_wldev, restart_work); |
| struct b43legacy_wl *wl = dev->wl; |
| int err = 0; |
| int prev_status; |
| |
| mutex_lock(&wl->mutex); |
| |
| prev_status = b43legacy_status(dev); |
| /* Bring the device down... */ |
| if (prev_status >= B43legacy_STAT_STARTED) |
| b43legacy_wireless_core_stop(dev); |
| if (prev_status >= B43legacy_STAT_INITIALIZED) |
| b43legacy_wireless_core_exit(dev); |
| |
| /* ...and up again. */ |
| if (prev_status >= B43legacy_STAT_INITIALIZED) { |
| err = b43legacy_wireless_core_init(dev); |
| if (err) |
| goto out; |
| } |
| if (prev_status >= B43legacy_STAT_STARTED) { |
| err = b43legacy_wireless_core_start(dev); |
| if (err) { |
| b43legacy_wireless_core_exit(dev); |
| goto out; |
| } |
| } |
| out: |
| if (err) |
| wl->current_dev = NULL; /* Failed to init the dev. */ |
| mutex_unlock(&wl->mutex); |
| if (err) |
| b43legacyerr(wl, "Controller restart FAILED\n"); |
| else |
| b43legacyinfo(wl, "Controller restarted\n"); |
| } |
| |
| static int b43legacy_setup_modes(struct b43legacy_wldev *dev, |
| int have_bphy, |
| int have_gphy) |
| { |
| struct ieee80211_hw *hw = dev->wl->hw; |
| struct b43legacy_phy *phy = &dev->phy; |
| |
| phy->possible_phymodes = 0; |
| if (have_bphy) { |
| hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| &b43legacy_band_2GHz_BPHY; |
| phy->possible_phymodes |= B43legacy_PHYMODE_B; |
| } |
| |
| if (have_gphy) { |
| hw->wiphy->bands[IEEE80211_BAND_2GHZ] = |
| &b43legacy_band_2GHz_GPHY; |
| phy->possible_phymodes |= B43legacy_PHYMODE_G; |
| } |
| |
| return 0; |
| } |
| |
| static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev) |
| { |
| /* We release firmware that late to not be required to re-request |
| * is all the time when we reinit the core. */ |
| b43legacy_release_firmware(dev); |
| } |
| |
| static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| struct ssb_bus *bus = dev->dev->bus; |
| struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL; |
| int err; |
| int have_bphy = 0; |
| int have_gphy = 0; |
| u32 tmp; |
| |
| /* Do NOT do any device initialization here. |
| * Do it in wireless_core_init() instead. |
| * This function is for gathering basic information about the HW, only. |
| * Also some structs may be set up here. But most likely you want to |
| * have that in core_init(), too. |
| */ |
| |
| err = ssb_bus_powerup(bus, 0); |
| if (err) { |
| b43legacyerr(wl, "Bus powerup failed\n"); |
| goto out; |
| } |
| /* Get the PHY type. */ |
| if (dev->dev->id.revision >= 5) { |
| u32 tmshigh; |
| |
| tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); |
| have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY); |
| if (!have_gphy) |
| have_bphy = 1; |
| } else if (dev->dev->id.revision == 4) |
| have_gphy = 1; |
| else |
| have_bphy = 1; |
| |
| dev->phy.gmode = (have_gphy || have_bphy); |
| dev->phy.radio_on = 1; |
| tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; |
| b43legacy_wireless_core_reset(dev, tmp); |
| |
| err = b43legacy_phy_versioning(dev); |
| if (err) |
| goto err_powerdown; |
| /* Check if this device supports multiband. */ |
| if (!pdev || |
| (pdev->device != 0x4312 && |
| pdev->device != 0x4319 && |
| pdev->device != 0x4324)) { |
| /* No multiband support. */ |
| have_bphy = 0; |
| have_gphy = 0; |
| switch (dev->phy.type) { |
| case B43legacy_PHYTYPE_B: |
| have_bphy = 1; |
| break; |
| case B43legacy_PHYTYPE_G: |
| have_gphy = 1; |
| break; |
| default: |
| B43legacy_BUG_ON(1); |
| } |
| } |
| dev->phy.gmode = (have_gphy || have_bphy); |
| tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; |
| b43legacy_wireless_core_reset(dev, tmp); |
| |
| err = b43legacy_validate_chipaccess(dev); |
| if (err) |
| goto err_powerdown; |
| err = b43legacy_setup_modes(dev, have_bphy, have_gphy); |
| if (err) |
| goto err_powerdown; |
| |
| /* Now set some default "current_dev" */ |
| if (!wl->current_dev) |
| wl->current_dev = dev; |
| INIT_WORK(&dev->restart_work, b43legacy_chip_reset); |
| |
| b43legacy_radio_turn_off(dev, 1); |
| b43legacy_switch_analog(dev, 0); |
| ssb_device_disable(dev->dev, 0); |
| ssb_bus_may_powerdown(bus); |
| |
| out: |
| return err; |
| |
| err_powerdown: |
| ssb_bus_may_powerdown(bus); |
| return err; |
| } |
| |
| static void b43legacy_one_core_detach(struct ssb_device *dev) |
| { |
| struct b43legacy_wldev *wldev; |
| struct b43legacy_wl *wl; |
| |
| /* Do not cancel ieee80211-workqueue based work here. |
| * See comment in b43legacy_remove(). */ |
| |
| wldev = ssb_get_drvdata(dev); |
| wl = wldev->wl; |
| b43legacy_debugfs_remove_device(wldev); |
| b43legacy_wireless_core_detach(wldev); |
| list_del(&wldev->list); |
| wl->nr_devs--; |
| ssb_set_drvdata(dev, NULL); |
| kfree(wldev); |
| } |
| |
| static int b43legacy_one_core_attach(struct ssb_device *dev, |
| struct b43legacy_wl *wl) |
| { |
| struct b43legacy_wldev *wldev; |
| int err = -ENOMEM; |
| |
| wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); |
| if (!wldev) |
| goto out; |
| |
| wldev->dev = dev; |
| wldev->wl = wl; |
| b43legacy_set_status(wldev, B43legacy_STAT_UNINIT); |
| wldev->bad_frames_preempt = modparam_bad_frames_preempt; |
| tasklet_init(&wldev->isr_tasklet, |
| (void (*)(unsigned long))b43legacy_interrupt_tasklet, |
| (unsigned long)wldev); |
| if (modparam_pio) |
| wldev->__using_pio = 1; |
| INIT_LIST_HEAD(&wldev->list); |
| |
| err = b43legacy_wireless_core_attach(wldev); |
| if (err) |
| goto err_kfree_wldev; |
| |
| list_add(&wldev->list, &wl->devlist); |
| wl->nr_devs++; |
| ssb_set_drvdata(dev, wldev); |
| b43legacy_debugfs_add_device(wldev); |
| out: |
| return err; |
| |
| err_kfree_wldev: |
| kfree(wldev); |
| return err; |
| } |
| |
| static void b43legacy_sprom_fixup(struct ssb_bus *bus) |
| { |
| /* boardflags workarounds */ |
| if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && |
| bus->boardinfo.type == 0x4E && |
| bus->boardinfo.rev > 0x40) |
| bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL; |
| } |
| |
| static void b43legacy_wireless_exit(struct ssb_device *dev, |
| struct b43legacy_wl *wl) |
| { |
| struct ieee80211_hw *hw = wl->hw; |
| |
| ssb_set_devtypedata(dev, NULL); |
| ieee80211_free_hw(hw); |
| } |
| |
| static int b43legacy_wireless_init(struct ssb_device *dev) |
| { |
| struct ssb_sprom *sprom = &dev->bus->sprom; |
| struct ieee80211_hw *hw; |
| struct b43legacy_wl *wl; |
| int err = -ENOMEM; |
| |
| b43legacy_sprom_fixup(dev->bus); |
| |
| hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops); |
| if (!hw) { |
| b43legacyerr(NULL, "Could not allocate ieee80211 device\n"); |
| goto out; |
| } |
| |
| /* fill hw info */ |
| hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
| IEEE80211_HW_SIGNAL_DBM; |
| hw->wiphy->interface_modes = |
| BIT(NL80211_IFTYPE_AP) | |
| BIT(NL80211_IFTYPE_STATION) | |
| BIT(NL80211_IFTYPE_WDS) | |
| BIT(NL80211_IFTYPE_ADHOC); |
| hw->queues = 1; /* FIXME: hardware has more queues */ |
| hw->max_rates = 2; |
| SET_IEEE80211_DEV(hw, dev->dev); |
| if (is_valid_ether_addr(sprom->et1mac)) |
| SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); |
| else |
| SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); |
| |
| /* Get and initialize struct b43legacy_wl */ |
| wl = hw_to_b43legacy_wl(hw); |
| memset(wl, 0, sizeof(*wl)); |
| wl->hw = hw; |
| spin_lock_init(&wl->irq_lock); |
| spin_lock_init(&wl->leds_lock); |
| mutex_init(&wl->mutex); |
| INIT_LIST_HEAD(&wl->devlist); |
| INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work); |
| |
| ssb_set_devtypedata(dev, wl); |
| b43legacyinfo(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id); |
| err = 0; |
| out: |
| return err; |
| } |
| |
| static int b43legacy_probe(struct ssb_device *dev, |
| const struct ssb_device_id *id) |
| { |
| struct b43legacy_wl *wl; |
| int err; |
| int first = 0; |
| |
| wl = ssb_get_devtypedata(dev); |
| if (!wl) { |
| /* Probing the first core - setup common struct b43legacy_wl */ |
| first = 1; |
| err = b43legacy_wireless_init(dev); |
| if (err) |
| goto out; |
| wl = ssb_get_devtypedata(dev); |
| B43legacy_WARN_ON(!wl); |
| } |
| err = b43legacy_one_core_attach(dev, wl); |
| if (err) |
| goto err_wireless_exit; |
| |
| if (first) { |
| err = ieee80211_register_hw(wl->hw); |
| if (err) |
| goto err_one_core_detach; |
| } |
| |
| out: |
| return err; |
| |
| err_one_core_detach: |
| b43legacy_one_core_detach(dev); |
| err_wireless_exit: |
| if (first) |
| b43legacy_wireless_exit(dev, wl); |
| return err; |
| } |
| |
| static void b43legacy_remove(struct ssb_device *dev) |
| { |
| struct b43legacy_wl *wl = ssb_get_devtypedata(dev); |
| struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); |
| |
| /* We must cancel any work here before unregistering from ieee80211, |
| * as the ieee80211 unreg will destroy the workqueue. */ |
| cancel_work_sync(&wldev->restart_work); |
| |
| B43legacy_WARN_ON(!wl); |
| if (wl->current_dev == wldev) |
| ieee80211_unregister_hw(wl->hw); |
| |
| b43legacy_one_core_detach(dev); |
| |
| if (list_empty(&wl->devlist)) |
| /* Last core on the chip unregistered. |
| * We can destroy common struct b43legacy_wl. |
| */ |
| b43legacy_wireless_exit(dev, wl); |
| } |
| |
| /* Perform a hardware reset. This can be called from any context. */ |
| void b43legacy_controller_restart(struct b43legacy_wldev *dev, |
| const char *reason) |
| { |
| /* Must avoid requeueing, if we are in shutdown. */ |
| if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) |
| return; |
| b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason); |
| ieee80211_queue_work(dev->wl->hw, &dev->restart_work); |
| } |
| |
| #ifdef CONFIG_PM |
| |
| static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state) |
| { |
| struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); |
| struct b43legacy_wl *wl = wldev->wl; |
| |
| b43legacydbg(wl, "Suspending...\n"); |
| |
| mutex_lock(&wl->mutex); |
| wldev->suspend_init_status = b43legacy_status(wldev); |
| if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) |
| b43legacy_wireless_core_stop(wldev); |
| if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) |
| b43legacy_wireless_core_exit(wldev); |
| mutex_unlock(&wl->mutex); |
| |
| b43legacydbg(wl, "Device suspended.\n"); |
| |
| return 0; |
| } |
| |
| static int b43legacy_resume(struct ssb_device *dev) |
| { |
| struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); |
| struct b43legacy_wl *wl = wldev->wl; |
| int err = 0; |
| |
| b43legacydbg(wl, "Resuming...\n"); |
| |
| mutex_lock(&wl->mutex); |
| if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) { |
| err = b43legacy_wireless_core_init(wldev); |
| if (err) { |
| b43legacyerr(wl, "Resume failed at core init\n"); |
| goto out; |
| } |
| } |
| if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) { |
| err = b43legacy_wireless_core_start(wldev); |
| if (err) { |
| b43legacy_wireless_core_exit(wldev); |
| b43legacyerr(wl, "Resume failed at core start\n"); |
| goto out; |
| } |
| } |
| |
| b43legacydbg(wl, "Device resumed.\n"); |
| out: |
| mutex_unlock(&wl->mutex); |
| return err; |
| } |
| |
| #else /* CONFIG_PM */ |
| # define b43legacy_suspend NULL |
| # define b43legacy_resume NULL |
| #endif /* CONFIG_PM */ |
| |
| static struct ssb_driver b43legacy_ssb_driver = { |
| .name = KBUILD_MODNAME, |
| .id_table = b43legacy_ssb_tbl, |
| .probe = b43legacy_probe, |
| .remove = b43legacy_remove, |
| .suspend = b43legacy_suspend, |
| .resume = b43legacy_resume, |
| }; |
| |
| static void b43legacy_print_driverinfo(void) |
| { |
| const char *feat_pci = "", *feat_leds = "", |
| *feat_pio = "", *feat_dma = ""; |
| |
| #ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT |
| feat_pci = "P"; |
| #endif |
| #ifdef CONFIG_B43LEGACY_LEDS |
| feat_leds = "L"; |
| #endif |
| #ifdef CONFIG_B43LEGACY_PIO |
| feat_pio = "I"; |
| #endif |
| #ifdef CONFIG_B43LEGACY_DMA |
| feat_dma = "D"; |
| #endif |
| printk(KERN_INFO "Broadcom 43xx-legacy driver loaded " |
| "[ Features: %s%s%s%s, Firmware-ID: " |
| B43legacy_SUPPORTED_FIRMWARE_ID " ]\n", |
| feat_pci, feat_leds, feat_pio, feat_dma); |
| } |
| |
| static int __init b43legacy_init(void) |
| { |
| int err; |
| |
| b43legacy_debugfs_init(); |
| |
| err = ssb_driver_register(&b43legacy_ssb_driver); |
| if (err) |
| goto err_dfs_exit; |
| |
| b43legacy_print_driverinfo(); |
| |
| return err; |
| |
| err_dfs_exit: |
| b43legacy_debugfs_exit(); |
| return err; |
| } |
| |
| static void __exit b43legacy_exit(void) |
| { |
| ssb_driver_unregister(&b43legacy_ssb_driver); |
| b43legacy_debugfs_exit(); |
| } |
| |
| module_init(b43legacy_init) |
| module_exit(b43legacy_exit) |